“I think; therefore I am.”

Conquer yourself rather than the world.

The greatest minds are capable of the greatest vices as well as of the greatest virtues.

You just keep pushing. You just keep pushing. I made every mistake that could be made. But I just kept pushing.

When I turn my mind’s eye upon myself, I understand that I am a thing which is incomplete and dependent on another and which aspires without limit to ever greater and better things…

Doubt is the origin of wisdom.

It is not enough to have a good mind; the main thing is to use it well.

I took especially great pleasure in mathematics because of the certainty and the evidence of its arguments.

Mind and soul of the man is entirely different from the body.

So far, I have been a spectator in this theatre which is the world, but I am now about to mount the stage, and I come forward masked.

With me, everything turns into mathematics.

In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things

Except our own thoughts, there is nothing absolutely in our power.

I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.

In order to improve the mind, we ought less to learn than to contemplate.

To live without philosophizing is in truth the same as keeping the eyes closed without attempting to open them.

If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.

The older you get, the more you learn to see what you’ve been taught to see. When you’re a kid, you see what’s there.

Be brutal with the past, especially your own, and have no respect for the philosophies that are foisted on you from outside.

Even when we find not what we seek, we find something as well worth seeking as what we missed.

We don’t belong to anyone. Half the time we don’t even belong to ourselves.

Poets are the sense, philosophers­­ the intelligence­­ of humanity.

Why should things be easy to understand?

Art is a marriage of the conscious and the unconscious.

My philosophy is that it’s better to explore life and make mistakes than to play it safe and not to explore at all.