Power corrupts, but lack of power corrupts absolutely.

If we value the pursuit of knowledge, we must be free to follow wherever that search may lead us. The free mind is no barking dog to be tethered on a ten-foot chain.

[I]t is difficult to picture the great Creator conceiving of a program of one creature (which He has made) using another living creature for purposes of experimentation. There must be other, less cruel ways of obtaining knowledge.

A wise man does not try to hurry history. Many wars have been avoided by patience, and many have been precipitated by reckless haste.

Carelessness about our security is dangerous, carelessness about our freedom is also dangerous.

A man doesn't save a century, or a civilization, but a militant party wedded to a principle can.

Man is a strange animal, he doesn't like to read the handwriting on the wall until his back is up against it.