"In athletics there's always been a willingness to cheat if it looks like you're not cheating. I think that's just a quirk of human nature"

"The art of medicine consists in amusing the patient while nature cures the disease"

"Nature and wisdom never are at strife"

"He loves nature in spite of what it did to him"

"We cannot command Nature except by obeying her"

"Where is human nature so weak as in the bookstore?"

"The sound of the human voice is the best of nature but only if it comes out from the feelings"

"There are more men ennobled by study than by nature"

"He is richest who is content with the least, for content is the wealth of nature"

"Art is not merely an imitation of the reality of nature, but in truth a metaphysical supplement to the reality of nature, placed alongside thereof for its conquest"

"The chess-board is the world, the pieces are the phenomena of the universe, the rules of the game are what we call the laws of Nature. The player on the other side is hidden from us"