However good an argument in philosophy may happen to be, it is generally not good enough.

Darwinism is not a sufficient condition for a phenomenon like Nazism but I think it's certainly a necessary one.

Although every novel is derived directly from another novel, there is really only one novel, the Quixote.

The desire to see and the desire to ratify what one has seen are desires at odds with one another, if only because they proceed from separate places in the imagination.

"Young men wish always to dream of what they have lost." "And old men?" "Of what they have not found."

Some philosophers see into themselves, and some into their times; still others forge an alliance with the future.

Arithmetic is where the content lies, and not logic; but logic prompts certainty, and not arithmetic.

No man is obliged to be what he might have been.

The calculus is the story this [the Western] world first told itself as it became the modern world.

I do not know whether any of this is true. I am certain that the scientific community does not know that it is false.

Aristotelian logic is massive and marmoreal, but every monument accumulates graffiti.

The most beautiful thing in the world is a heart that is changing.

Nothing is going to remain the way it is. Let us, in the present, study the past, so as to invent the future.

I was meticulously copying other art and then I realized I could just use a camera and put my time into an idea instead.

Sometimes you're fooled quickly. You want to be fooled. If you can't trust your first impression you're going to have a harder time than you should.

If you double the number of experiments you do per year you're going to double your inventiveness.

When I'm writing I've been playing something for a couple of hours and I'm almost in a trance. At two or three in the morning you can actually see bits inspiration floating about and grab them.

The value of teaching without words and accomplishing without action is understood by few in the world.

There is no need to dream in nature because you are already inside the dream!

Experience teaches that a strong memory is generally joined to a weak judgment.

Our focus must be on what we need to change about ourselves-our attitudes, our words, our actions-even if our circumstances and the other people in our lives remain the same.