in Hebrew we have an adage that says “הדור הולך ופוחת” ("Hador holekh wepocheth"), meaning “the generation is getting more and more diminished", which may have meant that there are fewer and fewer new children, but now commonly means that the younger generations are not as educated/disciplined/well-rounded/well-mannered/etc. than the previous ones. I wonder where it originates from.
I recall reading something to that effect in Qoheleth ("Ecclesiastes") back when I fully read it (in Hebrew) saying something like “don't say the 'Generation is diminishing' for it is folly”, but I can no longer find it.
Any insights will be welcome.