Be in general virtuous, and you will be happy.

We are all born ignorant, but one must work hard to remain stupid.

You will find the key to success under the alarm clock.

God grant, that not only the Love of Liberty, but a thorough Knowledge of the Rights of Man, may pervade all the Nations of the Earth, so that a Philosopher may set his Foot anywhere on its Surface, and say, 'This is my Country.'

Savages we call them, because their manners differ from ours, which we think the perfection of civility; they think the same of theirs.

Proclaim not all though knowest, or all though owest.

In reality, there is, perhaps, no one of our natural passions so hard to subdue as pride. Disguise it, struggle with it, beat it down, stifle it, mortify it as much as one pleases, it is still alive, and will every now and then peep out and show itself; you will see it, perhaps, often in this history; for, even if I could conceive that I had completely overcome it, I should probably be proud of my humility.