A lifetime of happiness! No man alive could bear it; it would be hell on earth.
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.
Patriotism is, fundamentally, a conviction that a particular country is the best in the world because you were born in it…
Success does not consist in never making mistakes but in never making the same one a second time.
A life spent making mistakes is not only more honourable, but more useful than a life spent doing nothing.