能源的未来在于平衡经济增长与环境管理。

It has yet to be proven that intelligence has any survival value.

做事情不需要花费许多的体力，但做决定需要付出很大的精力。

【讲解】：不怕东西少而怕分配不均匀，不怕贫困而怕不安定。

We are all descendants of successful ancestors; failure left no progeny.

Education does not plant the faculties in us like seeds in a garden; it merely directs them in the way they should go.

It is by no means an irrational fancy that, in a future existence, we shall look upon what we think our present existence, as a dream.