All great truths begin as blasphemies.
The power of accurate observation is frequently called cynicism by those who have not got it.
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.
The moment we want to believe something, we suddenly see all the arguments for it, and become blind to the arguments against it.
Progress is impossible without change, and those who cannot change their minds cannot change anything.
Some men see things as they are and ask why. Others dream of things that never were and ask why not.