我不是悲观主义者，我是一个受过悲观主义训练的乐观主义者。
I’m not a pessimist. I’m an optimist trained in pessimism.
Moderation is a fatal thing. Nothing succeeds like excess.
The future of forestry belongs to those who see trees as living systems, not just standing inventory.
Change your conception of yourself and you will change your world.
The biggest risk is not taking any risk... In a world that is changing really quickly, the only strategy that is guaranteed to fail is not taking risks.