I agree with Aristotle as regards all other living beings and à fortiori as regards plants and all the rest of earthly creatures. For I do not believe that it is through Divine Providence that a certain leaf drops, nor do I hold that when a certain spider catches a certain fly, that this is a direct result of a special decree and will of God in that moment; it is not by a particular Divine decree that the spittle of a certain person moved, fell on a certain gnat in a certain place, and killed it; nor is it by the direct will of God that a certain fish catches and swallows a certain worm on the surface of the water. In all these cases the action is... entirely due to chance, as taught by Aristotle.

Ch.17 - Guide for the Perplexed (c. 1190) - Part III