Man is not the author of nature; but he uses natural things in applying art and virtue to his own use.
 Thomas Aquinas, Summa Theologica (1274). copy citation

add
Author Thomas Aquinas
Source Summa Theologica
Topic virtue art
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/17611/pg17611-images.html

Context

“It would appear that it was on account of these two arguments to which we have just replied, that some were persuaded to consider corruptible things—e.g. casual and evil things—as removed from the care of divine providence. Reply Obj. 3: Man is not the author of nature; but he uses natural things in applying art and virtue to his own use. Hence human providence does not reach to that which takes place in nature from necessity; but divine providence extends thus far, since God is the author of nature. Apparently it was this argument that moved those who withdrew the course of nature from the care of divine providence, attributing it rather to the necessity of matter, as Democritus, and others of the ancients.” source