To the extent math refers to reality, we are not certain to the extent we are certain, math does not refer to reality.

Gravitation is not responsible for people falling in love.

Life is like riding a bicycle. To keep your balance, you must keep moving.

Life isn't worth living, unless it is lived for someone else.

Imagination is everything. It is the preview of life's coming attractions.

Wisdom is not a product of schooling but of the lifelong attempt to acquire it.

Strive not to be a success, but rather to be of value.

The true sign of intelligence is not knowledge but imagination.

God is clever but not dishonest.

Try not to become a man of success but rather a man of value.

Weakness of attitude becomes weakness of character.

War is a soul-shattering experience for the innocent.

Writing is one of the easiest things: erasing is one of the hardest.

As soon as you stop wanting something you get it. I've found that to be absolutely axiomatic.

The vast majority of the shuttle program was a success. We learned so much about how a reusable spacecraft interacts with its environment, how it ages-and what to design next time.

When my hair was shorter, I used to get it done every couple of days... but I got tired of that.

To show the potentialities of a brighter future we must first resuscitate the visions of a better past.

One of my major goals is to develop a web of the small Wyoming museums and create a major museum system. There are about eight of these museums, and they are all scattered.

What is an epigram? A dwarfish whole, its body brevity, and wit its soul.

Diversity means understanding.