"The greatest evils in our industrial system to-day are those which rise from the abuses of aggregated wealth; and our great problem is to overcome these evils and cut out these abuses. No one man can deal with this matter. It is the affair of the people as a whole. When aggregated wealth demands what is unfair, its immense power can be met only by the still greater power of the people as a whole, exerted in the only way it can be exerted, through the Government; and we must be resolutely prepared to use the power of the Government to any needed extent, even though it be necessary to tread paths which are yet untrod. The complete change in economic conditions means that governmental methods never yet resorted to may have to be employed in order to deal with them. We can not tolerate anything approaching a monopoly, especially in the necessaries of life, except on terms of such thoroughgoing governmental control as will absolutely safe guard every right of the public. Moreover, one of the most sinister manifestations of great corporate wealth during recent years has been its tendency to interfere and dominate in politics."

“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.”