“Revolutionary men with principles were not really different from the rest. They used their cleverness to get, in return for principles, what other men buy with their money.”

“So it would be, were it not for the law of inertia, as immutable a force in men and nations as in inanimate bodies. In men it takes the form of the psychological principle, so truly expressed in the words of the Gospel, " They have loved darkness better than light, because their deeds were evil." This principle shows itself in men not trying to recognise the truth, but to persuade themselves that the life they are leading, which is what they like and are used to, is a life perfectly consistent with truth.”

“There are many men of principle in both parties in America, but there is no party of principle.”

“There are three principles in a man's being and life: The principle of thought, the principle of speech, and the principle of action. The origin of all conflict between me and my fellow-men is that I do not say what I mean and I don't do what I say.”

“The customers, mostly well-to-do vacationers with little knowledge of turquoise, were using a standard principle—a stereotype—to guide their buying: “expensive = good.”

“To know how to distinguish the agitation arising from covetousness, from the agitation arising from principles, to fight the one and aid the other, in this lies the genius and the power of great revolutionary leaders.”