In English
Looking at a tumbler that is half filled with water, an optimist says that the tumbler is half filled, while a pessimist says that the tumbler is half empty. Your understanding depends upon your vision. Good and bad exist in the world. One must use proper discrimination between good and bad, and between right and wrong. Dualities are inescapable in this world. There is a thorn attached to a rose. Pleasure is an interval between two pains. One must develop the quality of contentment by using proper discrimination.