Capitalism drives the employers to do their worst to the employed, and the employed to do the least for them. And it boasts all the time of the incentive it provides to both to do their best! . . . The reason the Capitalist system has worked so far without jamming for more than a few months at a time, and then only in places, is that it has not yet succeeded in making a conquest of human nature so complete that everybody acts on strictly business principles.
A Louisiana politician can't afford to let his animosities carry him away, and still less his principles, although there is seldom difficulty in that department.
My interest in science was always essentially limited to the study of principles.... That I have published so little is due to this same circumstance, as the great need to grasp principles has caused me to spend most of my time on fruitless pursuits.
Friendship with the upright, with the truthful and with the well informed is beneficial. Friendship with those who flatter, with those who are meek and who compromise with principles, and with those who talk cleverly is harmful.
To see others suffer does one good, to make others suffer even more: this is a hard saying but an ancient, mighty, human, all-too-human principle [....] Without cruelty there is no festival.