Gustave Courbet, The Wave c.1869
"The position and movement of our planet in the cosmos of which we form a part, its shape, its size, its general equilibrium, must necessarily be known before we can really understand any one of the physical phenomenon occurring on its surface. The most elementary of these, and the one present in almost all the others, weight, cannot be truly studied apart form the universal celestial phenomenon of which it is only a particular case. Indeed I have note elsewhere, that important phenomenon, above all that of the tides, naturally effect a real, though almost imperceptible, transition from astronomy to physics"
-Auguste Comte, Philosophic Considerations of Physics c.1835