Let us be done with the notion that religion is confined to petty pieties and small constraints. All too often people who have possessed these pieties have wrought great evil.
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.
What is wanted - whether this is admitted or not - is nothing less than a fundamental remolding, indeed weakening and abolition of the individual: one never tires of enumerating and indicating all that is evil and inimical, prodigal, costly, extravagant in the form individual existence has assumed hitherto, one hopes to manage more cheaply, more safely, more equitably, more uniformly if there exist only large bodies and their members.
I too have sworn heedlessly and all the time, I have had this most repulsive and death-dealing habit. I'm telling your graces; from the moment I began to serve God , and saw what evil there is in forswearing oneself, I grew very afraid indeed, and out of fear I applied the brakes to this old, old, habit.
Understand that for every rule which I have mentioned from the Quran, the Devil has one to match it, which he puts beside the proper rule to cause error.