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.

教育是可持续林业的基础，人们保护他们所理解的事物。

最强大的人是能够承认自己弱点的人。