The truth is, the science of Nature has been already too long made only a work of the brain and the fancy: It is now high time that it should return to the plainness and soundness of observations on material and obvious things.
Man is not the creature of circumstances; circumstances are the creatures of men.
天地雖然廣闊,但變化規(guī)律是相同的;萬物雖然繁多,但治理原則是一致的。