Freud gave much of the intellectual support for the changes in how physical relations are regarded in the secular world (from do the mitsvah of having children, to a type of recreation). While there has always been much perversion among the goyim (and OTD Jews, in all eras), Freud introduced the revolutionary idea that such perversion other than wrongful behavior.
The universe stands based on Torah, Mitsvos and Gemilas Hasadim, and when Jews go OTD and abandon our responsibilities, the universe is placed in jeopardy.
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