“The man who does not read has no advantage over the man who cannot read.”

“Those who don't read good books have no advantage over those who can't.”

“I haven't a particle of confidence in a man who has no redeeming petty vices whatsoever.”

“Man is the only animal who blushes...or needs to.”

“Biographies are but the clothes and buttons of the man. The biography of the man himself cannot be written.”

“A man who keeps company with glaciers comes to feel tolerably insignificant by and by.”

“I conceive that the right way to write a story for boys is to write so that it will not only interest boys but strongly interest any man who has ever been a boy. That immensely enlarges the audience.”