“Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”

Progress is impossible without change, and those who cannot change their minds cannot change anything.

Science is increasingly answering questions that used to be the province of religion.

America is like a quilt-many patches, many colors, all held together by a common thread.

Hard work is never lost.

The future is completely open, and we are writing it moment to moment.

Let the refining and improving of your own life keep you so busy that you have little time to criticize others.