St. Thomas laid the intellectual groundwork for modern natural science — the absolute distinction between existence and essence.
I can describe anything you like in whatever detail you like, but you can’t know whether it exists or not merely by its description.
Nature is like a stack of books, sessile, until moved.
In my ongoing debate with biologist Jerry Coyne, frequent reference is made to Aquinas’ Five Ways, particularly to his Prime Mover argument.
The design we infer in nature is an insight we abstract from our senses, but the inference itself is acquired by our reason.