One generation cannot bind another.

The evils which of necessity encompass the life of man are sufficiently numerous. Why should we add to them by voluntarily distressing and destroying one another? Peace, brothers, is better than war. In a long and bloody war, we lose many friends, and gain nothing. Let us then live in peace and friendship together, doing to each other all the good we can.

I view great cities as pestilential to the morals, the health and the liberties of man. True, they nourish some of the elegant arts; but the useful ones can thrive elsewhere; and less perfection in the others, with more health, virtue and freedom, would be my choice.

The general desire of men to live by their heads rather than their hands, and the strong allurements of great cities to those who have any turn for dissipation, threaten to make them here, as in Europe, the sinks of voluntary misery.

While wading through the whimsies, the puerilities, and unintelligible jargon of this work [Plato's Republic], I laid it down often to ask myself how it could have been that the world should have so long consented to give reputation to such nonsense as this?

Doubts and jealousies often beget the facts they fear.

As new discoveries are made, new truths discovered and manners and opinions change with the change of circumstances, institutions must advance also to keep pace with the times.