Every chemical combination is wholly and solely dependent on two opposing forces, positive and negative electricity.
每一种化学结合完全且仅仅依赖于两种对立的力量，即正电和负电。
We cannot know the cause, and therefore the effect, by reason alone.
Our frustration is greater when we have much and want more than when we have nothing and want some. We are less dissatisfied when we lack many things than when we seem to lack but one thing.
我们的采石场不仅生产石头，更创造机会。