What is Philosophy?: Crash Course Philosophy #1

Crash Course Philosophy
is brought to you by Squarespace. Squarespace: share your passion with the world. I’m Hank Green, and you and I are about
to embark on a journey. A journey of inquiry, into the whole world.
Your world. In an effort to figure out: what gives it
meaning, what makes it beautiful, where its evils come from, and ultimately, what is the
very nature of reality itself. And along the way, we’re going to question
every aspect of your own personal life — why you do what you do, why you think what you
think, why you feel what you feel. Now, if you’ve joined me on Crash Course
before, you might say, we’ve learned about all that stuff before — in psychology, and
biology, and anatomy and physiology. And it’s true: Science can definitely help
us understand our thoughts, feelings, and actions. But on this particular journey, we’re going to be
exploring aspects of the human condition that can’t be explained only by hormones or neurotransmitters,
by personal experiences or hereditary conditions. Because, all of those chemicals and experiences
that make us who we are, can actually raise as many questions as they answer. Like, if all of my decisions really are just
the result of, say, how I was raised, and what chemicals I have flowing in my brain,
then are any of my choices actually free? And if I’m not truly free to make my own
decisions, or choose my own actions, then how can I be held accountable for them? Yeah. It’s going to be that kind of journey. Rather than just looking at the world and
describing what we see, we’ll be evaluating it. We will take nothing as a given, set our assumptions
aside — or at least, try really hard to — and do our best to see the world as if we’ve
never seen it before. And for what it’s worth, we’ll also be
talking about Batman, and what Dick Grayson can teach us about the concept of identity. And we’ll learn how The Matrix can you help
understand the life and writing of Rene Descartes. Also we’ll try to answer unanswerable questions,
and puzzle over paradoxes that have plagued geniuses for thousands of years. It’s going to be hard, and enlightening,
and frustrating, and if I do my job properly, it’ll stick with you long after you and
I have parted ways. Because: We are going to do…philosophy! [Theme Music] These days, people use the word “philosophy”
to describe some opinion they might have, or the approach they take to a certain topic. Like, you might have a “philosophy” when
it comes to golf. Though…I personally do not. But we’re going to use this word more narrowly,
to describe a way of approaching the world that traces its roots back to ancient Greece,
500 years before the Common Era. This was a time of great intellectual movement
around the world. Buddhism and Jainism were developing in Asia, at the same time philosophical
thought was emerging in Greece. There, scholars were tangled up in a distinction
they were just beginning to make — between philos and mythos – or what we’d now roughly
call science and storytelling. At that time, there were bards, like Homer,
who were trying to understand and explain the world through stories, while the earliest
philosophers were using methods that were more analytical and scientific — although they
didn’t really have the concept of “science” back then. So philosophia – literally “the love of wisdom” –
was a new way of trying to make sense of the world. When the earliest philosophers used the word
“philosophy,” they basically meant, “the academic study of anything.” Which, like, I guess could include golf. But at what we might call the first universities
in the western world – Plato’s Academy, and its rival, Aristotle’s Lyceum — math,
biology, physics, poetry, political science, and astronomy were all considered to be philosophy. Eventually, scholars began thinking of these
fields differently — as separate disciplines. Studies that had strong empirical elements came
to be considered science — a search for answers. But philosophy came to be understood more
as a way of thinking about questions. Big questions. And today, twenty-five hundred years after
the ancient Greeks first brought them up, philosophers still love asking questions
— oftentimes, the same questions — and they don’t mind that they never get an answer. So. What are these big questions that have managed
to intrigue — and stump — philosophers for so long? One of the first might best be phrased as:
What is the world like? Sounds simple enough to answer, right
Like, just look around! See all the stuff? Well, this is what the world is like. But the philosophical approach isn’t just
based on observation — it has other, much more complex questions packed inside it. When a philosopher wonders what the world is like,
she might really be asking: What’s the nature of reality? Like, is the world just made up of matter
and energy, or is there something else going on? And if it is just matter and energy, then
where did it all come from? Is there a God? And if so, what is he, she, or it like? And for that matter, when you’re asking
about the world, can you also be asking about the nature of yourself, as a citizen of the world. So…what kind of being am I? Do I have a soul? Is there something immaterial
about me that will survive after I die? All of these questions are ways of exploring
what philosophers call metaphysics — one of the three main branches of philosophy — an
effort to understand the fundamental nature of the world, of the universe, and of being. Now, if those questions aren’t heady enough
for you, we, as students of philosophy, also have a whole separate set of questions, that are
about how we know the answers to any of this stuff. This particular strain of philosophy, which
is like knowing about knowing, is epistemology — literally the study of knowledge — the
second major field of philosophy. And it poses questions like: Is the world
really what I think it is? Like, really, is everything I see and think
and experience…is it actually…true? If it isn’t, then, what is true? And what’s the best way to
go about figuring out the truth? Is science the best way? Or are there more ethereal paths to Truth,
paths that science can never really travel? And let’s say that, after a lot of searching
and question-asking, I begin to develop some ideas — an inkling about what might be true. Then…how do I know if I’m right? How will
I ever know I’m wrong? Can I ever be certain about anything?! Now, at this point I wouldn’t blame you
if you’re thinking: “Am I real?” “Do I…do I know anything?” Well, as questions go,
these might not seem super…practical. But there’s another area of philosophy that
helps frame your thinking around what you actually do — like, how you should act, and
what you should attach meaning to. It’s called Value Theory. And it’s usually divided
into two main branches. The first is Ethics. You’ve heard of it — it’s the thing that
politicians are always said to lack? And Jedi are supposed to have in great supply?
Though, don’t get me started on the prequels. In philosophy, though, ethics isn’t just
a code of what’s right and what’s wrong. It’s the study of how humans should live
with each other. Rather than just sitting around and judging people,
ethics involves posing questions like: How should I live? Is there any reason that I should treat, say,
strangers differently than the people I love? And for that matter, do I owe anything to
myself? What about animals? Or the earth? And if I do have any of these obligations
at all, where do they come from? Who says? Ultimately, whatever system you use to decide
what’s good or evil, as human behavior goes, is determined by your values — that’s why
ethics is considered part of Value Theory. But the other part of value theory isn’t
about what’s right — it’s about what’s beautiful. Aesthetics is the study of beauty, and art. Now, the concept of beauty is talked about practically
everywhere, from the media, to art school to barber college. But for philosophers, the pursuit of aesthetics involves
considering what beauty is, and whether it even exists. Aesthetics is a part of value theory, because
beauty, and art, are things we value, and evaluate. And many people who study this particular
kind of philosophy — known as aestheticians — believe there is such as thing as The Beautiful
— something that doesn’t depend on what you happen to find attractive, but something
that’s just objectively true. And finally, there’s one more aspect of
philosophy that I should mention, because it doesn’t ask questions, so much as help us
find answers. Yes, finally, some answers! And that thing, which I happen to think can
be beautiful in its own way, is logic. Logic is the philosopher’s toolbox. It contains
the saws and hammers, the microscopes and beakers, that philosophers use to go about
answering their questions in a clear, systematic way. Logic is about reasoning, giving strong arguments
that don’t fall victim to fallacies, which are, as you’ll learn, the mortal enemies
of philosophical precision. Ok, so metaphysics, epistemology, value theory
— they might all seem pretty airy and abstract. But don’t worry, because you have already done
philosophy, even though you might not realize it. You do it in almost every aspect of your life. Every time you argue with your parents, or
wonder if you should date someone, or decide to eat a salad instead of a ham ‘n’ cheese
Hot Pocket, you are doing philosophy. Because you’re thinking about the world,
and your place in it. You’re figuring out what you value, why you value it, and what
you should do about it. So here’s our plan. We’re going to learn
about the major fields of philosophy, posing questions and considering possible answers along
the way. And each time, we will use a two-step method. First, we’ll really try to understand. You’re not going to agree with all of the
ideas that I present to you – and I won’t agree with them either! That’s not the point.
The point, in step one, is to really try to get inside of an idea – to understand it
as charitably as possible. Then, in step two, you’ll subject your understanding
to some serious critical evaluation – basically, you’ll try to knock down what you think
you know about a particular view of the world. And you’ll do this whether you agree with
the view or not. Why? Because: Only when you challenge your
understanding of how some people view the world, can you decide for yourself if theirs
is a view worth having. Which leads me to my final point: Philosophy
is not your usual field of study. I’m not going to be teaching you a body of knowledge
where success means you know a bunch of stuff. Success, in this course, will mean that you
know how to think. All we have are questions. And all you have
is a brain. And the goal of philosophy is for you to use your brain to come up with
the answers that make the most sense to you. You’ll learn how to formulate arguments to support your
ideas, so you can explain why you think you’re right. Which, if you’ve ever been on the Internet, you
know is something that not a lot of people are good at. In order to do that, you’re going to need
to understand philosophical reasoning – the tools we use to investigate life’s most
perplexing questions! And that is where we’re gonna be headed the next time we meet. For now you’ve learned about the historical
origins of philosophy in ancient Greece, and its three main divisions: metaphysics, epistemology,
and value theory. We also talked about logic, and how you’re going to use it to understand and
critically evaluate a whole host of different worldviews. But not about golf. This episode of Crash Course Philosophy is
made possible by Squarespace. Squarespace is a way to create a website, blog or online
store for you and your ideas. Squarespace features a user-friendly interface, costume
templates and 24/7 customer support. Try Squarespace at squarespace.com/crashcourse for a special
offer. Crash Course Philosophy is produced in association
with PBS Digital Studios. You can head over to their channel to check out some amazing shows
like The Good Stuff, PBS Space Time, and Physics Girl. This episode of Crash Course was filmed in
the Doctor Cheryl C. Kinney Crash Course Studio with the help of these amazing people and
our Graphics Team is Thought Cafe.


  1. Rene Sotomayor April 10, 2019 at 5:50 am

    This got me thinking. I love you dude

  2. Roger Penn April 10, 2019 at 10:25 pm

    Thank you

  3. Alexa Schmeltz April 11, 2019 at 2:36 am

    Who are the little statue guys in the lower right corner?

  4. Master Baiter April 12, 2019 at 4:56 pm

    I am the origin of everything.
    From me is everything instituted.

  5. Mohan aggarwal April 14, 2019 at 3:54 am

    I really liked this video. Philosophy is very much fascinating.

  6. Perry Comeau April 15, 2019 at 5:15 pm

    hmmm? No.

  7. Maix Waix April 16, 2019 at 2:05 am

    Well you have to be held accountable for your actions as a learning point it just is that our society has no reform in its system and prisoners leave prison criminals

  8. no one April 17, 2019 at 3:38 am

    HOw dO i not Go CraZY?

  9. Kevin de Oliveira April 17, 2019 at 10:13 pm

    7:16 Ben Shapiro feelings

  10. Ramier Yulo April 17, 2019 at 11:21 pm

    Why are you talk so fast. Your like a raapper you know

  11. PigIron BigIron April 18, 2019 at 12:58 pm

    You want to make more money kids??? Learn Philosophy, you're welcome.

  12. Dallas Lashmet April 20, 2019 at 6:41 am

    Pretty edgy for a man in a shiny tan jacket!

  13. Garett M. April 20, 2019 at 10:12 am

    Thank you

  14. 진선종 April 20, 2019 at 6:13 pm

    Too fast..

  15. iremdilek April 23, 2019 at 8:18 am

    hey guys pls suggest me a good philosophy book!

  16. Callum Hudson April 25, 2019 at 10:46 pm

    Yo I’m at 1:26 isn’t what he just said determinism

  17. Jeje jeje April 29, 2019 at 4:34 pm

    I want to do philosophy in college but all my friends and family laugh at me 🙁
    I think its utterly fascinating

  18. Bryan Castañeda May 1, 2019 at 6:58 am

    I like sociology so I might like Philosophy

  19. Donner Tang May 3, 2019 at 7:34 am

    Philosophy: let's talk in a vacuum

  20. Donner Tang May 3, 2019 at 7:43 am

    Such a good video!

  21. joshua riley May 3, 2019 at 3:29 pm

    What's the name of that soundtrack?

  22. Kick-Yum May 5, 2019 at 9:21 am

    This is higher than any drugs combine

  23. MohammadReza Taherkhani May 6, 2019 at 12:55 pm

    liked it. thanks

  24. brinna dixon May 7, 2019 at 2:38 am

    why am I so confused

  25. Her_ poetry May 8, 2019 at 1:37 pm

    I write philosophies…

  26. Malki sehgal May 10, 2019 at 4:21 pm

    1:17 Goosebumps Moment(The Question)

  27. Silverback Pauly May 12, 2019 at 4:13 pm

    I always watch Crashcourse for the classes I’m about to take in college. Do you guys think it’s a good idea to take Philosophy and Critical Thinking in the same semester or is it too much of that material? I could use ur replies, thanks

  28. Sofia Opsimar May 18, 2019 at 12:16 am

    its from my nme

  29. Jacob Simwanza May 18, 2019 at 12:05 pm

    In what order should I study these 4 branches of philosophy so that I fully understand it?

  30. xXPrincess GamerXx May 18, 2019 at 4:16 pm

    Whenever I see this mans face I’m like “you are so coooool!” In such an ecstatic tone

  31. Pilot Lusidyus May 19, 2019 at 2:34 pm


  32. Nishiki Yo May 19, 2019 at 3:30 pm

    Can u please talk slowly. Those new informations you're throwing are hard to process one by one when you talk that fasy

  33. isaiah senise May 22, 2019 at 6:07 am

    This really got me interested in this topic. WOW

  34. zdcyclops1 lickley May 22, 2019 at 8:24 pm

    Why is he miming a conductor?

  35. inkwell flood May 22, 2019 at 11:57 pm

    Great video.

  36. Sl Ab May 26, 2019 at 10:46 am

    Philoshopy either makes you look stupid or highly intelligent

  37. Viktoria Svane May 26, 2019 at 1:12 pm

    bruh, respec.. u w u

  38. Island Luv May 28, 2019 at 2:27 am

    When I first discovered philosophy and especially nihilism- I started to question life and went into a deep existential crisis/depression. It was bad. I was a teen though. Anyone else experience that?

  39. Dorcas Mubita May 28, 2019 at 9:44 pm

    Please people help me answer the following questions according to the video,,, how can logic help a teacher to be effective? And why is axiology important to a teacher? Importance of epistemology in teacher education?

  40. Ar Vivo May 29, 2019 at 9:40 pm

    Rick vibes

  41. Alexander Wrencher June 1, 2019 at 8:57 am

    The Imperialism of Western thought. Colonialist nature of philosophy is real and still alive. Ancient writers themselves relate how Greek thinkers “traveled to Egypt to learn in its temples”—among them Thales of Miletus and Pythagoras, who studied in the temples of Heliopolis, Memphis, and Thebes. And Plato himself, the great ancestor of Western philosophy spent thirteen years as a student in Heliopolis.

  42. Lisa Dixon June 2, 2019 at 4:55 pm

    my life is a huge bucket of epistemology. :O
    thanks for talking about value theory and ethics, i needed it

  43. Isa Ngo June 3, 2019 at 1:14 am

    If you fully understand and use Philosophy to think about creation and the universe, you’ll know GOD

    Knowing and learning Philosophy made me believe in god

  44. Isa Ngo June 3, 2019 at 1:16 am

    Comment below who believes in god

  45. Cookie BOI June 3, 2019 at 9:04 pm

    Wish me luck on my philosophy a level tomorrow !!

  46. Sue Steiner June 4, 2019 at 12:05 pm

    You speak way to fast to make this lesson or video enjoyable.

  47. Isabelle Aguiar June 5, 2019 at 1:17 pm

    Loving this course 🙂

  48. Hydra'sLair June 5, 2019 at 5:05 pm

    I know this is old, but isn't it mythos and sophos (instead of mythos and philos, since philos has to do with love and sophos with knowledge)?

  49. Dragutin Zupanec June 7, 2019 at 9:22 pm


  50. Mahmoud Ezzat June 9, 2019 at 11:57 am

    Just started watching this series. As it seems that I will finish it 2day, wow totally interested and enthusiastic about this subject 🙂

  51. tom smith June 11, 2019 at 4:16 am

    What is the meaning of life?

  52. Alyssa The lady June 12, 2019 at 1:03 pm

    Yeah that me

  53. Think and Do June 13, 2019 at 11:20 am

    CrashCourse is objectively a part of "The Beautiful" he mentioned!

  54. Free Thinker June 14, 2019 at 11:05 am

    "Philosophy" is really a verb denoting the process of finding and uniting "love" and "wisdom" within yourself. It is essentially the Western world's version of Inner Alchemy.

  55. Neutral51 June 15, 2019 at 10:09 pm

    Hmm he pretty much stuffed philosophy to box :/ chained it to real world

  56. Syntac Gago June 17, 2019 at 2:16 pm

    Enumarate the different period in philosophy and define each period

  57. BeepBop Boop June 20, 2019 at 10:42 pm

    Great video.
    God I hate this topic so muuuuccchhh. Its just bs and pointless to me.

  58. Mik Kat June 21, 2019 at 5:33 am

    So my thoughts are Metaphysics? That's wild

  59. All Roads Lead Here June 25, 2019 at 7:27 pm

    Philosophy might not bake bread, but it will give you a reason not to eat it.

  60. Tony Cole June 26, 2019 at 12:30 pm

    Should I do Philosophy if I want to go in the law industry?

  61. khaleesi June 27, 2019 at 6:41 pm

    I am binge watching this for no reason

  62. Doc Holiday June 28, 2019 at 2:08 pm

    Love this!

  63. Doc Holiday June 28, 2019 at 2:12 pm

    Metaphysics and logic are essential to understand and figure out the mysteries of astronomy, physics and all other sciences.

  64. Doc Holiday June 28, 2019 at 2:14 pm

    It will be a philosopher/scientist who comes up with a grand unifying theory of everything.

  65. Doc Holiday June 28, 2019 at 2:16 pm

    Have to share on Facebook

  66. jeff schumacher June 30, 2019 at 11:03 am

    Philosophy: mostly immoral secularists trying to justify authority and terrible behavior while hijacking supposed scientific rigor
    Religion: mostly false moralists trying to maintain power through the conversation about 'divine directive' while hijacking supposed captured divinity. The bible is a historical document of occult knowledge, obsolete compilation, and SOME of the conversation about divinity during the time of its canonization. It is not an objective dictation of a super-hyper-non-terrestrial being who encompasses all but is none. The bible is mans account of his discretion and a period of trial and error that we are well beyond.

    Philosophy and religion have the same ends, and both are more concerned with power position authority and scarcity management than quality ideology or subjective metaphysical consideration or interpretation.

  67. Costa July 3, 2019 at 1:36 pm

    am i really alive right now?

  68. Sahil Ohe July 3, 2019 at 6:02 pm

    help in building an A.I with your knowledge

  69. namjoon July 7, 2019 at 1:16 pm


  70. Fathomistic Fantasy July 9, 2019 at 12:06 am

    I have a question that will be sure to stump everyone who has an ax to grind. "How do you accept someone's code of ethics with out judging another persons way of life?" Basically the don't judge lest you be judged concept is flawed unless you take the entire Christian scripture into consideration. I will leave that to those of you reading this because I am not looking to debate. I am merely asking a question.

  71. Dale Hamoy July 9, 2019 at 2:59 am

    I’m supposed to study mathematics but why am I here?

  72. Maggie Howell July 9, 2019 at 7:55 pm

    I'm only five minutes into the video and I'm already two seconds away from an existential crisis

  73. Zahidul Amin July 11, 2019 at 1:51 am

    there is three spectrum of Philosophy:
    Rich People: Stay positive, give to others, a good thing happens to good people, Kindness
    Middle class: Work hard! nothing is free in this world, to get something you need to give something

    Depending on your financial status your lifestyle defines your philosophy!

  74. Erin-may Bartlett July 11, 2019 at 9:56 pm

    Here because I decided to get my identity crisis going early

  75. Eric Barnes July 12, 2019 at 3:33 am

    Coming back for a second time. Thanks again for this awesome crash course.

  76. The Mighty Sagetto July 12, 2019 at 10:05 pm

    Ok GD. …I was gonna watch this awhile ago but didnt fully commit. Ive checked out a few others and i lived binge watching the astronomy and science ones. I'm an atheist who has been fighting a terminal organ failure diagnosis going on 2 years and dispite labcoats and almost everyone trying to justify it I think i also got a opioid addiction due to said ailment . Exiztential crisis isn't the term …I have no dream social life anymore and stay in my room painted black with windows blocking all light . My only friend I associate with is also my roommate that carries me and takes care if everything. I am terrified to kill myself but I want to and ironically I'm known for being a "badass' so now I keep thinking about how cowardly that is that I can't even get the balls to do it but ill sit here and whine about it . pathetic i know. …I'm hoping I can get some thing out of this …or any advice from someone who GAF even a little would be apprecIated the

  77. Appleton July 13, 2019 at 1:25 am

    I love CrashCourse.

  78. Jim July 14, 2019 at 5:18 am

    Hank is awesome, but that suit coat is … treasonous.

  79. Zoa ThePerson July 15, 2019 at 7:15 am

    Thanks for aiding me in a time of existential crisis

  80. Rick Eman ekaf July 16, 2019 at 4:46 pm

    I used one of these episodes in my 7th grade class of philosophy last year, thank you

  81. Empowered And Overpowered Leftist Black Woman July 17, 2019 at 4:05 am

    I started learning philosophy like a year ago…do you know what's the most amazing of this?, now i'm able to "see" moar, beyond the surface!, and even the most banal stuff can give me some inspiration to start philosophizing about it.

  82. Fiona Trinite July 17, 2019 at 9:58 pm

    LD debaters be like watches this whole series

  83. Johnin Joy Villanueva July 21, 2019 at 6:58 am

    Is philosophy a course or degree? Please explain. I need answer?

  84. Emily Rowland-Rawson July 25, 2019 at 12:21 pm

    i love that the CrashCourse playlist is a rainbow

  85. B and R Forever July 28, 2019 at 2:41 am

    Sooo I’m a philosopher and I never really knew ??

  86. VioleTa July 28, 2019 at 4:40 pm

    Well Straight done. Great

  87. Jamira Muhammad July 29, 2019 at 8:39 pm

    I’m starting college in the fall, I’ve chosen philosophy as a major! I love this, I just can’t get enough ❤️?

  88. rachel -.- July 31, 2019 at 10:59 am

    Here’s my questions I always think about. Why are we alive? What is space and where did it magically appear from? Why does anything exist? Nothing makes sense to me it confuses me. Me and my step sister was talking about space and talking about different questions what legit can’t be answered. I like legit got me in a zone as i was so heavily in thought and my chest got tight and I couldn’t breath. ??? should I take this for A levels ?

  89. Pratik Gore August 3, 2019 at 2:53 pm

    Will this help me in debates?

  90. underratedbub August 6, 2019 at 11:23 pm

    Hey guys, maybe put up an annotation correcting the mistake on definition of the Greek words at 2:32?

    "mythos" does indeed mean "story", but "philos" doesn't mean "science", it's "friend".

    "sophia" is "wisdom", what we might call science. So "philosophia" is love of wisdom. Pretty important to get terminology right.

  91. Joanne Oliver August 13, 2019 at 4:02 am

    When I was doing my first year of a Bachelor of Arts we had a compulsory course called 'Ways of Knowing', which was Philosophy based. I've been fascinated ever since. Looking forward to the rest of this course. 🙂

  92. cinnamon August 14, 2019 at 1:18 pm

    thank you, your videos are really helpful and easy to understand.

  93. Bharat Bhusan Lenka August 14, 2019 at 2:00 pm

    Hello [email protected]_course ..found your videos helpful but need a bit of help..can you upload the pdf format of what you explain in your episodes.. I am bit of reader not a comfortable watcher.. Don't say you have to be out of your comfort zone to know.. I want to strengthen my strength now. It will be helpful if you some how attach the pdf..

  94. Nou KenTao August 15, 2019 at 10:11 pm

    Thanks for what you do.

  95. Cheez Wheez August 16, 2019 at 9:34 am

    T H E B E A U T I F U L

  96. Trivia Night August 18, 2019 at 3:53 am

    Philosophy is very interesting.

  97. Tyler Daniel August 20, 2019 at 4:54 pm

    Wow I've always wondered how things ended up, and now i know… Stuart Minkus didn't let Shawn and Corey get to him, stayed on the learning train, and is now educating millions. Rock on, Minkus… rock on.

  98. Toby Carrett August 22, 2019 at 3:56 am

    Bruh just read the bible

  99. Alejandro Kaplan August 24, 2019 at 5:30 am

    I love Kant and Spinoza

  100. tonmoy mirza August 29, 2019 at 11:40 am

    How are you?
    I just wanted to say that you have done a great job…making lessons easier and understandable❤️❤️
    many people are being benefited by you
    I have a request….. please make more video series about philosophy and philosophers about their theory of life in details…… please ✌️✌️

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