Pessimistic people complain about the wind, optimistic people look forward to the wind turning, and realistic people adjust their sails. Love means risking no return, hope means risking disappointment, but the reason to take risks is because of the greatest danger in life. Just a little risk. The difference between optimists and pessimists is very funny. The former sees a bagel, and the latter see that hole. What is the most appropriate summary of this text? ['Optimism and pessimism.', 'Optimists and pessimists.', 'Bagels and the cave.', 'Philosophy in Life.']