The people who are regarded as moral luminaries are those who forego ordinary pleasures themselves and find compensation in interfering with the pleasures of others.

Zeno was concerned with three problems... These are the problem of the infinitesimal, the infinite, and continuity.

An educator should think of a child as a gardener thinks of a plant, as something to be made to grow by having the right soil and the right amount of water. If your roses fail to bloom, it does not occur to you to whip them, but you try to find out what has been amiss in your treatment of them. ... The important thing is what the children do, and not what they do not do. And what they do, if it is to have value, must be a spontaneous expression of their own vital energy.

The white tails of rabbits, according to some theologians, have a purpose, namely to make it easier for sportsmen to shoot them.

Not to be absolutely certain is, I think, one of the essential things in rationality.

America remained a land of promise for lovers of freedom. Even Byron, at a moment when he was disgusted with Napoleon for not committing suicide, wrote an eloquent stanza in praise of Washington.

In the part of this universe that we know there is great injustice, and often the good suffer, and often the wicked prosper, and one hardly knows which of those is the more annoying.