Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away. (Antoine de Saint Exupery)

The optimist proclaims that we live in the best of all possible worlds, and the pessimist fears this is true. (James Branch Cabell)

The fundamental cause of trouble in the world is that the stupid are cocksure while the intelligent are full of doubt. (Bertrand Russell)