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.

The division of labour， so far as it can be introduced， occasions， in every art， a proportionable increase of the productive powers of labour.

未来属于今天为之准备的人。

Sustainability isn’t an option; it’s the only way forward.