The pessimist sees an obstacle in the road and turns back. The optimist run towards it, seeing it as an opportunity to practicing their jumping abilities. The pessimist sees two people arguing and decides that no side shall win without the other losing. The optimist sees this as an opportunity for the arguers to create a new solution in which both sides win.
The pessimist sees difficulty in every opportunity. The optimist sees the opportunity in every difficulty.
Ask yourself, who would you rather go to war with?
Sir Winston Leonard Spencer-Churchill