Man's greatest asset is the unsettled mind.

Nonsense! The most hopelessly stupid man is he who is not aware that he is wise.

A good question is, of course, the key by which infinite answers can be educed.

We're forever teetering on the brink of the unknowable, and trying to understand what can't be understood.

The laws of history are as absolute as the laws of physics, and if the probabilities of error are greater, it is only because history does not deal with as many humans as physics does atoms, so that individual variations count for more.

However much the creationist leaders might hammer away at their scientific and philosophical points, they would be helpless and a laughing-stock if that were all they had. It is religion that recruits their squadrons. Tens of millions of Americans, who neither know nor understand the actual arguments for - of even against - evolution, march in the army of the night, their Bibles held high. And they are a strong and frightening force, impervious to, and immunized against, the feeble lance of mere reason.

It is not only the living who are killed in war.