译文：年年岁岁繁花依旧，岁岁年年看花之人却不相同。赏析：时光流逝，物是人非。花有重开时，人无再少年。

做出伟大工作的唯一途径就是热爱你所做的事。如果你还没找到，继续寻找，不要安于现状。

模形式的算术是理解数论更深奥谜团的关键。

爱得越多，痛苦越多，但活得也越深刻。

We must balance the need for energy with the responsibility to protect our planet.

You can always juice sales by going down-market, but it's hard to go back upmarket.

The true measure of success in forestry is leaving the land healthier than we found it.