If there was nothing wrong in the world there wouldn't be anything for us to do.
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.
The power of accurate observation is frequently called cynicism by those who have not got it.
Some men see things as they are and ask why. Others dream of things that never were and ask why not.