He,who teaches us Ved and Vedanta or the six Shastras (systems),he,who controls the breath or brands his body with Mudras (metallic marks of Vishnu’s weapons) or gives pleasing discourses regarding Brahma;he,who gives Mantras (sacred syllables) to the disciples and orders them to chant the same a certain number of times,but does not assure them any result in a definite time,he,who,by his lengthy gross knowledge,explains beautifully the Ultimate Principle;but has himself got no experience or self-realization,is not a Sadguru.But,he,who,by his discourse,creates in us a distaste for the enjoyments of this world and the next,and gives us a taste of self-realization,who is well-versed in both the theoretical and practical knowledge (self-realization) deserves to be called a Sadguru.How can he,who is himself devoid of self-realization,give it to the disciples? A Sadguru does not,ever in his dream,expect any service or profit from his disciples.On the contrary he wishes to serve them.He does not think that,he is great and the disciple is small.Not only,he loves him as his son but regards him as equal to himself or as Brahma.The main characteristic of a Sadguru is that,he is the abode of peace.He is never restless nor ruffled.He has no pride in his learning.The poor and the rich,the small and the great,are the same to him.