Every educational or progressive method has got do’s and do not’s. So the asuras, they do not know what they should do and what they should not do. That is asura. And a devotee, he knows what to do and what not to do. There is no illicit sex. That is “do not.” But there is “do” also, that “If you want sex life, then get yourself married according to religious principle and get a wife and beget nice children.” That is “do.” And “No illicit sex,” that is “do not.” Side by side. “You do not take intoxicants” — that is “do not.” But “You take Krsna prasadam and be intoxicated with Krsna’s love” — that is “do.” Similarly, “You do not indulge in gambling,” but “You indulge in gambling.” What is that gambling? That gambling is “Dedicate your life to Krsna and see the result.” That is also gambling. That is also gambling, because everyone is engaged in his own business, but if he’s advised, “You give up this business. You take to this Krsna business,” that is also gambling, because he does not know what will happen.

Srila Prabhupada, Talk on Bhagavad-gita 2.39 — September 12, 1973, London