"It is still an open question as to whether mankind or insects shall ultimately inherit the earth. It is my opinion that mankind … has about a 50-50 chance...."

“There has never been superadded to these vices of mine the withering, embalming vice of consistency.”

“I could throw 56-pound words clear across the Grand Canyon. As a matter of course, I went into politics.”

“I suffer from cacoethes loquendi, a mania or itch for talking, and from vanity . . . and morbidity, and, as is obvious to everyone who knows me, an inborn, an inveterate flair for histrionics. … I am pachydermatous. … I am a veritable peripatetic bifurcated volcano on behalf of Democratic principles.”

“Poker teaches self-reliance, self-control, self-respect, self-denial, and independence. But when cards are wild or are given fictitious authority, the noble game is robbed of its romance, grace and stimulation and degenerates into a gambling scheme.”

“… I shall not waste any time on such miserable twaddle as to say that I ought to have been elected. … It is the undoubted right of the people to change their servants, and to remove one and displace him with another at any time they choose, for a good reason, for a bad reason, or for no reason at all. If we are to remain a free people, it is the duty of public servants not grumpily and sourly to accept the verdict of the majority, but joyously to accept that verdict. . . .”

“No man is fit to be a Senator... unless he is willing to surrender his political life for great principle.”