St Thomas's words here and in the next argument should be considered by any student of J.S. Mill's Logic. Mill judged the syllogism from ready-made specimens, failing to note that the power of syllogism and the ability of a syllogiser is displayed, not in the made syllogism, but in syllogising. It is such a view as would be that of the biologist, who considered only dead plants and animals, and undervalued life accordingly.

Of God and His Creatures: 1.57