The sixth chapter of the Bhagavad Gita gives good guidelines on the characteristics of a quality teacher: A person is considered still further advanced when he regards honest well-wishers, affectionate benefactors, the neutral, mediators, the envious, friends and enemies, the pious and the sinners all with an equal mind. As a lamp in a windless place does not waver, so the transcendentalist, whose mind is controlled, remains always steady in his meditation on the transcendent self.