"I am not a well-read man, but a man who has read a few books well."

"I have no duty to be anyone's Friend and no man in the world has a duty to be mine. No claims, no shadow of necessity."

"It is not the man who has too little, but the man who craves more, that is poor."

"Education without values, as useful as it is, seems rather to make a more clever devil."

"It is a good rule after reading a new book, never to allow yourself another new one till you have read an old one in between."