The primary purpose of a liberal education is to make one's mind a pleasant place in which to spend one's leisure.

The difference between patriotism and nationalism is that the patriot is proud of his country for what it does, and the nationalist is proud of his country no matter what it does; the first attitude creates a feeling of responsibility, but the second a feeling of blind arrogance that leads to war.

Nice things are done for our own sake, not for the sake of others. The pleasure must reside in the performance, not in the applause. Good deeds are, in a deeper psychological way, a favor to oneself. If this is not grasped, then our whole sense of personal relationships becomes warped.

Nobody can be so amusingly arrogant as a young man who has just discovered an old idea and thinks it is his own.

The generality of mankind is lazy. What distinguishes men of genuine achievement from the rest of us is not so much their intellectual powers and aptitudes as their curiosity, their energy, their fullest use of their potentialities. Nobody really knows how smart or talented he is until he finds the incentives to use himself to the fullest. God has given us more than we know what to do with.

Knowledge fills a large brain; it merely inflates a small one.

The difference between faith and superstition is that the first uses reason to go as far as it can, and then makes the jump; the second shuns reason entirely — which is why superstition is not the ally, but the enemy, of true religion.