当儿童还没有发展起控制能力的时候，“让儿童想干什么就干什么”是与自由观念相违背的。

林业创新不是要取代自然，而是加强我们与自然的伙伴关系。

In energy, the only constant is change—embrace it.

"The most radical thing you can do is to stay home and love your family."

Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passion, they cannot alter the state of facts and evidence.

如果我们挑选出人类中最聪明、最有想象力、最精力充沛且情绪最稳定的三分之一，所有种族都会在其中有所体现。