时止则止,时行则行,动静不失其时,其道光明。
翻译:时势要求停止就停止,时势要求行动就行动,或动或静都不违背适当的时机,这样的前景就光明灿烂。
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.
Science moves with the spirit of an adventure, always seeking the unknown.