Bad administration, to be sure, can destroy good policy, but good administration can never save bad policy.

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

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.

Eggheads, unite! You have nothing to lose but your yolks.

A wise man who stands firm is a statesman, a foolish man who stands firm is a catastrophe.

I have been told that one of the reasons the astronomers of the world cooperate is the fact that there is no one nation from which the entire sphere of the sky can be seen. Perhaps there is in that fact a parable for national statesmen, whose political horizons are all too often limited by national horizons.

The sound of tireless voices is the price we pay for the right to hear the music of our own opinions.