"I love the way Robert Schuller differentiates between the optimist and the pessimist. An optimist calls a half glass of water "half full", a pessimist "half empty". The reason is simple. The optimist is putting water in the glass. The pessimist is taking water out of the glass. It's almost a universal truth. Anyone taking from society with no real effort to contribute to society is pessimistic because he fears there won't be enough for him. The person who is doing his best and making a contribution is optimistic and confident because he is personally working on the solution."
"Optimists are people who, when they wear out their shoes, just figure they are back on their feet"