A lifetime of happiness! No man alive could bear it; it would be hell on earth.
The power of accurate observation is frequently called cynicism by those who have not got it.
Progress is impossible without change, and those who cannot change their minds cannot change anything.
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.