Added to this we already see numerous indications of a future, in which the chemical and mechanical laws of nature will be more intimately united. In short, the natural laws of chemistry, as well as those of mechanics, are laws of Reason, and both are so intimately connected, that they must be viewed as a unity of Reason.

The Soul in Nature with Supplementary Contributions, All Existence a Dominion of Reason (p. 104), Henry C. Bohn. 1852