 Just like philosophy, as a way towards salvation, is an imitation of God and implies that the disciple is provided not only of an acute mind, but also of a pure heart (through which God will be recognized as the sole and the supreme teacher in knowledge and deeds, as the Holy Book demonstrates, cf., e.g., Qur., II, 31: ‘And He taught Adam the names', mentioned in Epistle 28, III, 18, 14–16 and in Epistle 31, III, 112, 19 and 141, 13–14; cf. also Epistle 23, II, 381, 17), the Ikhwân consider prophetic message (both esoteric and exoteric, hidden and clear) as the second necessary means for human salvation and happiness. This brings us back to the second aspect of the encyclopedia, its religious commitment.