M. Valentine, Theoretical Ethics
“ It is through these feelings that the conscience becomes a motive power for moral life. The perception of duty alone, as purely intellectual, would be, as said, "like a mirror accurately reflecting the ethical reality passing before it, but as indifferent as the mirror." But upon the perception the emotional nature springs into action. Knowledge, if at all, always goes into effect mediately through the sensibilities in which the soul is stirred by affections and desires. ”
