Stray birds of summer come to my window to sing and fly away。 And yellow leaves of autumn， which have no songs， flutter and fall there with a sigh。

对富有的单身汉应该客以重税。让某些人比其他人更快乐是不公平的。

If you want something you’ve never had, you must be willing to do something you’ve never done.

知识最大的敌人不是无知，而是知识的幻觉。

The best stories are those that leave us with more questions than answers.

解释：合理饮食则身体强健，“昌”表示兴盛；断绝饮食则生命消亡，强调了饮食对健康的重要性。