"Suffering is but another name for the teaching of experience, which is the parent of instruction and the schoolmaster of life."

"You may drive out nature with a pitchfork, yet she'll be constantly running back."

"It is no great art to say something briefly when, like Tacitus, one has something to say when one has nothing to say, however, and none the less writes a whole book and makes truth into a liar - that I call an achievement."

"Knowledge without education is but armed injustice."

"Flaming enthusiasm, backed up by horse sense and persistence, is the quality that most frequently makes for success."

"When you have shot one bird flying you have shot all birds flying. They are all different and they fly in different ways but the sensation is the same and the last one is as good as the first."

"A man can live and be healthy without killing animals for food; therefore, if he eats meat, he participates in taking animal life merely for the sake of his appetite."

"We ought to do good to others as simply as a horse runs, or a bee makes honey, or a vine bears grapes season after season without thinking of the grapes it has borne."