The pessimist complains about the wind, while the optimist expects the wind to turn. Realistic people adjust the sails. Love is to take the risk of no return, hope is to risk disappointment, but the reason to risk is because the greatest danger in life is to take no risk at all. The difference between an optimist and a pessimist is funny. The former sees a doughnut and the latter sees the hole.
The option 'Optimists and pessimists' is the most appropriate summary of this passage.