​Why Must You Avoid Non-Jewish Influences?

Even if the television would show you nothing but decent gentiles, who would lecture only on subjects of health or of politics (nothing that would affect your morals), the mere fact of voluntary contact with the umos ha’olam (nations of the world), beyond what's necessary for your livelihood already deprives you of the right to have the Shechina (Divine Presence) dwell on your home. — I Have Set You Apart (#546)