Think left and think right and think low and think high. Oh, the things you can think up if only you try.

Creativity is often blocked to trying to be perfect. Creativity is allowing yourself to make mistakes.

To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.

Innovation is the specific instrument of entrepreneurship…the act that endows resources with a new capacity to create wealth.

Sometimes when you innovate, you make mistakes. It is best to admit them quickly, and get on with improving your other innovations.

It is not reason which is the guide of life, but custom.

Men should strive to think much and know little.

I know only that what is moral is what you feel good after and what is immoral is what you feel bad after.

The value of a college education is not the learning of many facts but the training of the mind to think.

The surest way to corrupt a youth is to instruct him to hold in higher esteem those who think alike than those who think differently.

Understanding a question is half an answer.

Think of what you have rather than of what you lack. Of the things you have, select the best and then reflect how eagerly you would have sought them if you did not have them.

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

All truly great thoughts are conceived by walking.