Ours, according to Leibnitz, is the best of all possible worlds, and the laws of nature can therefore be described in terms of extremal principles. Thus, arising from corresponding variational problems, the differential equations of mechanics have invariance properties relative to certain groups of coordinate transformations.

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "Ours, according to Leibnitz, is the best of all possible worlds, and the laws of nature can therefore be described in terms of extremal principles. Thus, arising from corresponding variational problems, the differential equations of mechanics have invariance properties relative to certain groups of coordinate transformations." in the context of "Carl Ludwig Siegel, Lectures on Celestial Mechanics (1971) p. 1." to mean that wisdom is timeless.