The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

The greatest crimes are not committed by those who break the rules, but by those who follow them to the letter.

始终不渝地忠实于自己和别人，就能具备最伟大才华的最高贵品质。