The quiet conscience is an invention of the devil.

It is good to maintain and cherish life; it is evil to destroy and to cheek life

Reverence for life affords me my fundamental principle of morality, namely that good consists in maintaining, assisting, and enhancing life, and that to destroy, to harm, or to hinder life is evil

Better the Devil you know than the Devil you don't

The devil was the first democrat

Oh! what a potent instrument for Satan is a misguided conscience(93)!