"In many respects there is a complete lack of analogy between the civilization of to-day and the only other civilization in any way comparable to it, that of the ancient Greco-Roman lands. There are, of course, many points in which the analogy is close, and in some of these points the resemblances are as ominous as they are striking. But most striking of all is the fact that in point of physical extent, of wide diversity of interest, and of extreme velocity of movement, the present civilization can be compared to nothing that has ever gone before. It is now literally a world movement, and the movement is growing ever more rapid and is ever reaching into new fields. Any considerable influence exerted at one point is certain to be felt with greater or less effect at almost every other point. Every path of activity open to the human intellect is followed with an eagerness and success never hitherto dreamed of. We have established complete liberty of conscience, and, in consequence, a complete liberty for mental activity. All free and daring souls have before them a well-nigh limitless opening for endeavor of any kind."

“There is much talk about "jingoism". If by "jingoism" they mean a policy in pursuance of which Americans will with resolution and common sense insist upon our rights being respected by foreign powers, then we are "jingoes".”

“I don’t go so far as to think that the only good Indian is the dead Indian, but I believe nine out of every ten are, and I shouldn’t like to inquire too closely into the case of the tenth.”

“The most vicious cowboy has more moral principle than the average Indian.”

“By God, if you try anything like that, I'll kick you, I'll bite you, I'll kick you in the balls. I'll do anything to you — you'd better leave me alone.”

“When a judge decides a constitutional question, when he decides what the people as a whole can or cannot do, the people should have the right to recall that decision if they think it wrong. We should hold the judiciary in all respect; but it is both absurd and degrading to make a fetish of a judge or of anyone else.”

“If there ever was a pursuit which stultified itself by its very conditions, it is the pursuit of pleasure as the all-sufficing end of life. Happiness can not come to any man capable of enjoying true happiness unless it comes as the sequel to duty well and honestly done. To do that duty you need to have more than one trait.”