皮革的真正价值在于其耐用性和永恒的吸引力，而不仅仅是其美观性。

There are other reasons --There are other reasons why it's perhaps harder now to feel calm than ever before. One of these, and it's paradoxical, because it's linked to something that's rather nice, is the hope we all have for our careers. Never before have expectations been so high about what human beings can achieve with their life span.

有仁爱之心的人是没有敌人的

数学是理性的音乐。