The whole difference between construction and creation is exactly this: that a thing constructed can only be loved after it is constructed; but a thing created is loved before it exists.
可持续性不是一种趋势;而是我们对地球和未来农民的责任。
自然是一个活生生的整体,而不是一个死的集合体。
The greatest gift you can give someone is your time because you're giving them something you can never get back.
自私基因理论并不是关于日常意义上的自私的理论。它是关于行为进化的理论。