The melancholy science from which I make this offering to my friend relates to a region that from time immemorial was regarded as the true field of philosophy, but which, since the latter's conversion into method, has lapsed into intellectual neglect, sententious whimsy, and finally oblivion.

To create is to live twice.

美好的生活不是没有悲伤，而是在痛苦中能促进我们成长的生活。

新市场的开放，无论是国内还是国外，以及从手工作坊和工厂到美国钢铁公司等企业的组织发展，都说明了同样的工业突变过程——如果我可以用这个生物学术语的话——它不断地从内部革新经济结构，不断地摧毁旧的经济结构，不断地创造新的经济结构。