Patriotism is not 'my country right or wrong'; patriotism means loving the ideals for which America stands and having the courage to speak up when these ideals are distorted for personal or political gain. The American government was instituted to be the servant of the people, not our master.

When a place gets crowded enough to require ID's, social collapse is not far away. It is time to go elsewhere. The best thing about space travel is that it made it possible to go elsewhere.

Never worry about theory as long as the machinery does what it's supposed to do.

We each have a moral obligation to conserve and preserve beauty in this world; there is none to waste.

Learning isn't a means to an end; it is an end in itself.

One of the sanest, surest, and most generous joys of life comes from being happy over the good fortune of others.

The intelligent fights only when he must and never for sport.