真正的林业领导力意味着在经济增长和生态管理之间取得平衡。

So that morning in 1962 I told myself: Let everyone else call your idea crazy . . . just keep going. Don’t stop. Don’t even think about stopping until you get there, and don’t give much thought to where “there” is. Whatever comes, just don’t stop.

每个数学问题都有解答；挑战在于找到它。

宇宙为我们转动。