Who can explain what 'sanctify procreation' means?
Thank you so much!
"Primitive marriage, or whatever other deep-rooted folk-custom has ever been practiced to sanctify procreation, was anything but sentimental."
Oswald Spengler
If you "sanctify" something you are making it legitimate, usually within a religious context. So, in that case it seems to be talking about in what cases it would be socially acceptable to have children.