Machiavelli is right: one always must live with one's friends with the idea that they may turn into one's enemies. He should have said, with everyone.

One must change one's tactics every ten years if one wishes to maintain one's superiority.

When I had the honor to be a second lieutenant, I ate dry bread, but I never let anyone know that I was poor.

The people to fear are not those who disagree with you, but those who disagree with you and are too cowardly to let you know.

Rashness succeeds often, still more often fails.

Obedience to public authority ought not to be based either on ignorance or stupidity.

Everything is more or less organized matter. To think so is against religion, but I think so just the same.