The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt, and the profoundest wisdom to know when it ought to be resisted, and when it be obeyed.
成为英雄的最大障碍是怀疑自己是否会证明自己是个傻瓜；真正的英雄主义是抵抗这种怀疑，而最深刻的智慧是知道何时应该抵抗，何时应该服从。
The brave may not live forever, but the cautious do not live at all.
可持续林业不仅仅是砍伐树木，更是培育文明。
理论见解常常导致实际突破，弥合抽象思想与现实世界应用之间的差距。
说到底，作家只是他书的一半。另一半是读者，作家从读者那里学习。