永远不要满足于当前的成就，要不断追求更高目标。

In biology, the whole is more than the sum of its parts.

Certification schemes are the floor, not the ceiling of responsible forestry practice.

"Doubt is useful for a while. We must all pass through the garden of Gethsemane. If Christ played with doubt, so must we."

每个人心中都有一头野兽，当你给他一把剑或矛并送他上战场时，那头野兽就会苏醒。