To be effective, morality has to be reasoned (or worked out). To want ("vouloir", Fr.) to repress evil only by coercion, and to obtain morality by a sort of training with the help of constraint, without motivating it from within, is to make it an unnatural result, devoided of lastind value.
'Men die of the diseases which they have studied most,' remarked the surgeon, snipping off the end of a cigar with all his professional neatness and finish. 'It's as if the morbid condition was an evil creature which, when it found itself closely hunted, flew at the throat of its pursuer. If you worry the microbes too much they may worry you. I've seen cases of it, and not necessarily in microbic diseases either. There was, of course, the well-known instance of Liston and the aneurism; and a dozen others that I could mention.'
And they will return one day knowing the miracle of the heavens and of all the world. God knew what he was doing when he drew their attention to the tree of the Knowledge of Good and Evil. If he hadn’t wanted them to eat it, he would never have mentioned it.
In bad or corrupted natures the body will often appear to rule over the soul, because they are in an evil and unnatural condition. At all events we may firstly observe in living creatures both a despotical and a constitutional rule; for the soul rules the body with a despotical rule, whereas the intellect rules the appetites with a constitutional and royal rule. And it is clear that the rule of the soul over the body, and of the mind and the rational element over the passionate, is natural and expedient; whereas the equality of the two or the rule of the inferior is always hurtful.
About the nature of human beings. I discovered that confronted by temptation, we will always fall. Given the right circumstances, every human being on this earth would be willing to commit evil.
In what way, or by what manner of working, God changes a soul from evil to good, how He impregnates the barren rock--the priceless gems and gold--is to the human mind an impenetrable mystery, in all cases alike.
In Paradise, as always: that which causes the sin and that which recognizes it for what it is are one. The clear conscience is Evil, which is so entirely victorious that it does not any longer consider the leap from left to right necessary.