生活中只有两种悲剧：一个是没有得到我们想要的，另外一个是得到我们想要的。

War is an ugly thing， but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war， is much worse.

Stay curious, stay inspired.

真理是人类精神的自由创造，如果我们自己不产生它，它就永远不会存在。

The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.