Experience fails to teach where there is no desire to learn.
Marriage is an alliance entered into by a man who can't sleep with the window shut, and a woman who can't sleep with the window open.
Progress is impossible without change, and those who cannot change their minds cannot change anything.
A life spent making mistakes is not only more honourable, but more useful than a life spent doing nothing.
Success does not consist in never making mistakes but in never making the same one a second time.
No man who is occupied in doing a very difficult thing, and doing it very well, ever loses his self-respect.
Marriage is an alliance entered into by a man who can't sleep with the window shut, and a woman who can't sleep with the window open.