For since I already know sciam that my nature is very weak and limited, while on the other hand God's is immense, incomprehensible, and infinite, it follows that I know scio quite clearly that he can do innumerable things of the causes of which I am ignorant; and for this reason alone, I judge that the whole category of causes that people are in the habit of seeking by considering the purposes of things is of no use in the study of physics; for I think that it could only be rash of me to investigate God's purposes.