The 3-legged stool of understanding is held up by history, languages, and mathematics. Equipped with those three you can learn anything you want to learn. But if you lack any one of them you are just another ignorant peasant with dung on your boots.

The hardest part of gaining any new idea is sweeping out the false idea occupying that niche.

The most noble fate a man can endure is to place his own mortal body between his loved home and the war's desolation.

By the data to date, there is only one animal in the Galaxy dangerous to man -- man himself. So he must supply his own indispensable competition. He has no enemy to help him.

Stupidity is the only natural capital offense.

One man's 'magic' is another man's engineering. 'Supernatural' is a null word.

Sense is never common.