but it is the lesser evil for them to have this knowledge.
I agree with the sense and sentiment of your post - but please hear me out on a point that may sound trivial, but I believe it is very important. Lovers of the good and the true ought never - never - to choose an evil, whether it is the lesser or not.
I believe this to be an important point in the education of children - and of adults - that we are always to choose for the good. We are always to choose the best of the goods that are possible.
In a real situation where there are two choices, and neither seems completely good, we are to choose the one that is the
better of the two - that is
more in line with the perfect truth - the one that most advances the way to the Kingdom. Not, in other words, the “lesser of the evils”, but the better of the possibilities. The choice must be
for the good, not for the lesser evil. It is for the “
lessening” of evil, yes, but it is not for the “lesser evil.”
We do not want our children, I suggest, to
ever choose for evil! Not even the “lesser” evil. Never, never ought we choose for an evil. To choose
for an evil is to prepare the way, mentally and spiritually, for the moral error of believing that “the end justifies the means” - that a “good end” justifies any means or way to get to that end. No, this is false. A good end does not justify an evil path, an evil “means” to get there.
The evil one wants us to “get used to” choosing evil! He tempts us to “choose the lesser evil” - then he advances his agenda. He has succeeded in getting us to choose evil.
Catechism:
1759 “An evil action cannot be justified by reference to a good intention” (cf. St. Thomas Aquinas, Dec. praec. 6). The end does not justify the means.
1760 A morally good act requires the goodness of its object, of its end [or “intention”], and of its circumstances together.