The temptation was great to muster what force we could and put up a fight. It's the easiest way out, and the most satisfactory to self-respect--but, nearly invariably, the stupidest.

Self-education is a continuing source of pleasure to me, for the more I know, the fuller my life is and the better I appreciate my own existence

They absorb carbon monoxide and carbon dioxide and give out oxygen. What could be more desirable? And they look good in the bargain. Stop chopping down the rain forests and plant more saplings, and we're on our way.

Congratulations on the new library, because it isn't just a library. It is a space ship that will take you to the farthest reaches of the Universe, a time machine that will take you to the far past and the far future, a teacher that knows more than any human being, a friend that will amuse you and console you-and most of all, a gateway, to a better and happier and more useful life.

Science is a set of rules to keep us from telling lies to each other. All scientists really have is a reputation for telling the truth.

Any system which allows men to choose their own future will end by choosing safety and mediocrity, and in such a Reality the stars are out of reach.

One thought that occurs to me is that men will continue to withdraw from nature in order to create an environment that will suit them better.