Reason is the cold sun, it gives light but no warmth.

The man with a toothache thinks everyone happy whose teeth are sound. The poverty-stricken man makes the same mistake about the rich.

The profession of book writing makes horse racing seem like a solid, stable business.

解析：不要窃取他人的成果，不要忘记自己的耻辱。

水里的游鱼是沉默的，陆地上的兽类是喧闹的，空中的飞鸟是歌唱着的。但是，人类却兼有海里的沉默，地上的喧闹与空中的音乐。