There's no such thing as a self-made man. I've had much help and have found that if you are willing to work, many people are willing to help you.

You can easily judge the character of a man by how he treats those who can do nothing for him.

I have made the most important discovery of my career, the most important discovery of my life: It is only in the mysterious equations of love that any logic or reasons can be found.

Classes will dull your mind, destroy the potential for authentic creativity.

The purpose of education is to replace an empty mind with an open one.

People are always selling the idea that people with mental illness are suffering. I think madness can be an escape. If things are not so good, you maybe want to imagine something better.

Too many people overvalue what they are not and undervalue what they are.

As you will find in multivariable calculus, there is often a number of solutions for any given problem.

Failure is success if we learn from it.

Rationality of thought imposes a limit on a person's concept of his relation to the cosmos.

The biggest mistake people make in life is not trying to make a living at doing what they most enjoy.

It's all in the reflexes.

The truth. It is a beautiful and terrible thing, and must therefore be treated with great caution.

A library implies an act of faith.

I hate Shakespeare. I think Shakespeare's rubbish.

Perseverance is a virtue that cannot be understated.

An undefined goal is unreachable.

Nothing can be taken for granted and this great achievement is now under assault by Russia. But what we did in my time is no less honorable. It is for the present generation to defend.

Survival prospects are poor for an animal that is not suspicious of novelty.

Just because you're unemployed doesn't mean you're not doing anything useful. You are, for example, at least keeping your mother-in-law's wit sharp.

We remain unnecessarily worried. All worries are futile because that which is going to happen is going to happen.