It was all self-interest. Some who would have voted for the band instruments and uniforms wanted nothing to do with sports.

Self-interest is the enemy of all true affection.

We have always known that heedless self-interest was bad morals; we now know that it is bad economics.

By self-interest, Man has become gregarious, but in instinct he has remained to a great extent solitary; hence the need of religion and morality to reinforce self-interest

A man's interest in the world is only the overflow of his interest in himself

Whatever we treasure for ourselves separates us from others; our possessions are our limitations.