Every dictator is an enemy of freedom, an opponent of law.

It is impossible for men engaged in low and groveling pursuits to have noble and generous sentiments. A man's thought must always follow his employment.

All speech is vain and empty unless it be accompanied by action.

The man who is in the highest state of prosperity, and who thinks his fortune is most secure, knows not if it will remain unchanged till the evening.

Every advantage in the past is judged in the light of the final issue.

One believes in what one wants to believe in.

Since we are not yet fully comfortable with the idea that people from the next village are as human as ourselves, it is presumptuous in the extreme to suppose we could ever look at sociable, tool-making creatures who are from other evolutionary paths and see not beasts, but brothers, not rivals, but fellow pilgrims journeying to the shrine of intelligence...The difference... is not in the creature judged, but in the creature judging.