Difficulties should act as a tonic. They should spur us to greater exertion.

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 always matters who the storyteller is. It’s a lens.

And courage to me meant ploughing through that dull gray mist that comes down on life--not only overriding people and circumstances but overriding the bleakness of living.

Ever since I was young I loved making things and being part of the design process.

History, in the end, becomes a form of irony.

We are so not breaking out the violins and pity partying.

Without big data, you are blind and deaf and in the middle of a freeway.

George W. Bush is a leader, and that's what we need in the White House. George Bush is someone you can believe and trust.

The city has become a serious menace to our civilization It has a peculiar attraction for the immigrant.

We must not forget that all great revolutions and reformations would look mean and meagre if examined in detail as they occurred at the time.

I've got to tell you, I've got 99 problems, and palsy is just one.