Bhakti Yoga Part - 4 THE MANTRA: OM: WORD AND WISDOM But we are now considering not these Mahâ-purushas, the great Incarnations, but only the Siddha-Gurus (teachers who have attained the goal) they, as a rule, have to convey the germs of spiritual wisdom to the disciple by means of words (Mantra) to be meditated upon. What are these Mantras The whole of this universe has, according to Indian philosophy, both name and form as its conditions of manifestation.