We grow neither better or worse as we get old, but more like ourselves.

Whatever failures I have known, whatever errors I have committed, whatever follies I have witnessed in private and public life have been the consequence of action without thought.

Information cannot serve as an effective substitute for thinking.

Never pay the slightest attention to what a company president ever says about his stock.

Never answer a critic, unless he's right.

Old books that have ceased to be of service should no more be abandoned than should old friends who have ceased to give pleasure.

A man can't retire his experience.