It is a great mistake to think that a man's religion is going to rid him of his natural qualities.
 Oliver Wendell Holmes Sr., The Poet at the Breakfast-Table (1872). copy citation

Context

“If invalidism and the nervous timidity which is apt to go with it are elements of spiritual superiority, it follows that pathology and toxicology should form a most important part of a theological education, so that a divine might know how to keep a parish in a state of chronic bad health in order that it might be virtuous. It is a great mistake to think that a man's religion is going to rid him of his natural qualities. “Bishop Hall” (as you may remember to have seen quoted elsewhere) “prefers Nature before Grace in the Election of a wife, because, saith he, it will be a hard Task, where the Nature is peevish and froward, for Grace to make an entire conquest while Life lasteth.”” source