Philosophy begins when one learns to doubt - particularly to doubt one's cherished beliefs, one's dogmas and one's axioms.
For man, the unexamined life is not worth living.
Philosophy is a high mountain road…an isolated road and becomes even more desolate the higher we ascend. Whoever pursues this path should show no fear but must leave everything behind and confidently make his own way in the wintry snow…. He soon sees the world beneath him; its sandy beaches and morasses vanish from his view, its uneven spots are leveled out, its jarring sounds no longer reach his ear. And its roundness is revealed to him. He himself is always in the pure cool mountain air and beholds the sun when all below is still engulfed in dead of night.
Philosophy is written in the vast book which stands open before our eyes, I mean the universe; but it cannot be read until we have learnt the language and become familiar with the characters in which it is written.
The point of philosophy is to start with something so simple as not to seem worth stating and to end with something so paradoxical that no one will believe it.
Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.
Be the change that you wish to see in the world.
Without music, life would be a mistake.
The opposite of love is not hate, it's indifference. The opposite of art is not ugliness, it's indifference. The opposite of faith is not heresy, it's indifference. And the opposite of life is not death, it's indifference.
Go to heaven for the climate and hell for the company.