Ethical Theory embraces certain questions of pure PSYCHOLOGY.
1.

The Psychological nature of Conscience, the Moral Sense, or by whatever name we designate the faculty of distinguishing right and wrong, together with the motive power to follow the one and eschew the other.

That such a faculty exists is admitted.

The question is, what is its place and origin in the mind?
On the one side, Conscience is held to be a _unique_ and ultimate power of the mind, like the feeling of Resistance, the sense of Taste, or the consciousness of Agreement.

On the other side, Conscience is viewed as a growth or derivation from other recognized properties of the mind.