CS Lewis on Ethics

There are lots of people these days who advocate for casting off tradition - including Christianity - as part of the wicked "patriarchy" in order to establish "social justice."  

I have long held that this whole movement is incoherent - it begins with basic assumptions that are part of traditional (and Christian) morality, and then uses them in its assault upon Christianity and Tradition.  But no new grounding for the moral claims is offered.

CS Lewis points out the basic problems with "new moralities" that actually borrow some aspects of the classic, inherited, morality in order to attack classic and inherited tradition.  It is a self-contradiction.