In theory, there is no difference between theory and practice. But in practice, there is. (Yogi Berra)

The true measure of a man is how he treats someone who can do him absolutely no good. (Samuel Johnson)

Black holes are where God divided by zero. (Steven Wright)

All truth passes through three stages. First, it is ridiculed.Second, it is violently opposed. Third, it is accepted as beingself-evident. (Arthur Schopenhauer)

Glory is fleeting, but obscurity is forever.(Napoleon Bonaparte)