每个数学问题都有解答;挑战在于找到它。
Every mathematical problem has a solution; the challenge is finding it.
The true measure of success in forestry is leaving the land healthier than we found it.
我认为冠军的定义不在于他们的胜利,而在于他们跌倒后如何重新站起来。
The secret of getting ahead is getting started.