The aim of philosophy, abstractly formulated, is to understand how things in the broadest possible sense of the term hang together in the broadest possible sense of the term. Under “things in the broadest possible sense” I includes such radically different items as not only “cabbages and kings”, but numbers and duties, possibilities and finger snaps, aesthetic experience and death. To achieve success in philosophy would be . . . to “know one’s way around” with respect to all these things, not in that unreflective way in which the centipede of the story knew its way around before it faced the question, “how do I walk?” but in the reflective way which means that no intellectual holds are barred.

~ Wilfred Sellars

Science is what you know. Philosophy is what you don’t know.

~ Bertrand Russell

Philosophy is a battle against the bewitchment of our intelligence by means of language.

~ Ludwig Wittgenstein

If a man’s good for nothing else, he can at least teach philosophy.

~ William James

In truth there is no divorce between philosophy and life.

~ Simone de Beauvoir

We–humanity–are but a conversation.

~ Martin Heidegger

Philosophers have only interpreted the world. The point, however, is to change the world.

~ Karl Marx

Reason is and only ought to be the slave of the passions.

~ David Hume

[Thanks to Rick Werner for providing many of these quotes!]