对验证的渴望是可以理解的，但并不总能得到满足。
The desire for verification is understandable but cannot always be satisfied.
Every business decision we make in forestry must pass the test of time - will this still make sense in 100 years?
实现明天理想的唯一限制是我们今天的疑虑。
I was so much older then, I’m younger than that now.
人在幼年时，精神专注敏锐，成年后思想容易分散，因此教育要趁早，不可错过时机。