Speech is the mirror of the mind.

It passes in the world for greatness of mind, to be perpetually giving and loading people with bounties; but it is one thing to know how to give and another thing not to know how to keep. Give me a heart that is easy and open, but I will have no holes in it; let it be bountiful with judgment, but I will have nothing run out of it I know not how.

Many men provoke others to overreach them by excessive suspicion; their extraordinary distrust in some sort justifies the deceit.

The time will come when diligent research over periods will bring to light things which now lie hidden...Many discoveries are reserved for ages still to come, when memories of us will have been effaced. Our universe is a sorry little affair unless it has something for every age to investigate. nature does not reveal her mysteries once and for all.

To be able to endure odium is the first art to be learned by those who aspire to power.

It is dishonorable to say one thing and think another; how much more dishonorable to write one thing and think another.

It is the fault of youth that it cannot restrain its own impetuosity.