Human reason borrowed many arts from the instinct of animals.

The roads of science are narrow, so that they who travel them, must wither follow or meet one another.

If, sir, men were all virtuous, I should with great alacrity teach them all to fly. But what would be the security of the good if the bad could at pleasure invade them from the sky? Against an army sailing through the clouds neither wall, nor mountains, nor seas could afford any security.

A country is in a bad state, which is governed only by laws; because a thousand things occur for which laws cannot provide, and where authority ought to interpose.

To be free it is not enough to beat the system, one must beat the system every day

In all political regulations, good cannot be complete, it can only be predominant.

Preserve me from unseasonable and immoderate sleep.