C.N. Douglas, comp. Forty Thousand Quotations: Prose and Poetical. 1917.

Guicciardini

Ambassadors are the eye and ear of states.

Experience has always shown, and reason also, that affairs which depend on many seldom succeed.

He is less likely to be mistaken who looks forward to a change in the affairs of the world than he who regards them as firm and stable.

He who imitates what is evil always goes beyond the example that is set; on the contrary, he who imitates what is good always falls short.

There is no evil in human affairs that has not some good mingled with it.

We fight to great disadvantage when we fight with those who have nothing to lose.