Between the wish and the thing the world lies waiting.

失去一个父母可以看成是一种不幸；失去双亲看上去就像是一种粗心了。

Science is the knowledge of consequences, and dependence of one fact upon another.

The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.

预测未来的最好方式就是创造未来。