Yes and it's precisely for this reason--that "western civilization" was based on these things and not on A-mighty G-d--that "western civilization" is collapsing. "Except the L-rd build the house they labor in vain who build it."
The slow rebirth was later energized by the humanists and scientists of the Renaissance, Reformation, and eventually the 200-year European Enlightenment of the 17th and 18th centuries.
It is the "humanists" and "scientists" of the Renaissance and the "200-year European Enlightenment" that are directly responsible for the Left as we know it today. How can any conservative celebrate these things?