A candidate for spiritual advancement must be nonviolent, must follow in the footsteps of great ācāryas, must always remember the nectar of the pastimes of the Supreme Personality of Godhead, must follow the regulative principles without material desire and, while following the regulative principles, should not blaspheme others. A devotee should lead a very simple life and not be disturbed by the duality of opposing elements. He should learn to tolerate them.