This document provides an overview and summary of Hubbard Winslow's 19th century work "Moral Philosophy". It discusses Winslow's argument that ethics should not be based on theoretical philosophy alone and that conscience determines what is right. Conscience is defined as a faculty involving perception of moral truths and a susceptibility to feelings of right and wrong. The document outlines three functions of conscience - to feel we ought to do right and not wrong, to feel self-approval after doing right, and to feel pain after doing wrong. It warns that one cannot escape the retributions of an offended conscience.