Those who have experienced good and bad luck many times have every reason to be skeptical of successes

Knowledge without understanding is useless.

War is a matter not so much of arms as of money.

Ignorance is bold and knowledge reserved.

The cause of all these evils was the lust for power arising from greed and ambition; and from these passions proceeded the violence of parties once engaged in contention.

There is no need to suppose that human beings differ very much one from another; but it is true that the ones who come out on top are the ones who have been trained in the hardest school.

We secure our friends not by accepting favours but by doing them.