To prevent illness in later life, you should never have been born at all.
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.
Patriotism is, fundamentally, a conviction that a particular country is the best in the world because you were born in it…
The moment we want to believe something, we suddenly see all the arguments for it, and become blind to the arguments against it.