"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."

"As for me, except for an occasional heart attack, I feel as young as I ever did."

"It is a mistake to regard age as a downhill grade toward dissolution. The reverse is true. As one grows older, one climbs with surprising strides."

"Age isa€|wisdom, if one has lived one's life properly."

"A person is always startled when he hears himself seriously called an old man for the first time."

"With age come the inner, the higher life. Who would be forever young, to dwell always in externals?"

"We who are of mature age seldom suspect how unmercifully and yet with what insight the very young judge us."