"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."

"He who is of calm and happy nature will hardly feel the pressure of age, but to him who is of an opposite disposition youth and age are equally a burden."

"Beware of the young doctor and the old barber."

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

"Young men's minds are always changeable, but when an old man is concerned in a matter, he looks both before and after."

"I was always taught to respect my elders and I've now reached the age when I don't have anybody to respect."

"Old age is not so bad when you consider the alternatives."