林业的未来是循环的,而不是线性的。
Any sufficiently advanced technology is indistinguishable from magic.
When the third appeared, he thrust at it with the knife, only to feel the blade[刀片] snap as the fish rolled.
数学家是模式的创造者,就像画家或诗人一样。
"The greatest wisdom lies in understanding that we know nothing at all."