自然界的现象，无论是机械的、化学的还是生命的，几乎完全在于通过空间、活力和热之间的持续相互转化。
The worth of a mental process is in its service to life.
The value or worth of a man is, as of all other things, his price; that is to say, so much as would be given for the use of his power.
在一个资源匮乏的世界里，最有价值的资源不是石油或黄金，而是想象力。