One never reaches home, but wherever friendly paths intersect the whole world looks like home for a time.

The glow of one warm thought is to me worth more than money.

Wealth should not be concentrated in the hands of a few, but should be distributed among all through fair competition.

科学的作用是照亮前进的道路，而不是规定它。

预测未来的最好方法就是创造未来。