"Only as you do know yourself can your brain serve you as a sharp and efficient tool. Know your own failings, passions, and prejudices so you can separate them from what you see."

"If you have made a mistake, cut your losses as quickly as possible."

"Old age is always fifteen years older than I am."

"Never answer a critic, unless he's right."

"The older I get, the more I feel almost beautiful..."

"Age is not a particularly interesting subject. Anyone can get old. All you have to do is live long enough."

"An old doting fool, with one foot already in the grave."

"Always be nice to those younger than you, because they are the ones who will be writing about you."

"You're never too old to become younger."

"The heads of strong old age are beautiful beyond all grace of youth."