There is nothing I do that my conscience does not know about; it sees everything. The conscience objects whenever the body schemes to do something wrong. Yet, because the power of selfish love was stronger than the power of the conscience from the time of the Fall, the body is able to drag the mind around wherever it chooses. This kind of problem would not exist if the human conscience had achieved perfection and had formed a relationship of true love with God in the garden of Eden.
Source
P. 92, par. 1