know this, if we ought already to know it by the very fact that we are different from cattle? For just as you do not read anything to me for the purpose of teaching me that I am alive (my own nature making it impossible that I should be ignorant of this fact), so if it is an attribute of nature to know this other matter, why do you produce passages of Scripture for me to believe concerning this subject? Is it then only those persons who read them that differ from the cattle? Are we not so created