Artha jna brahmana refers to one who has made a thorough analytical study of the Absolute Truth and who knows that the Absolute Truth is realized in three different phases, namely Brahman, Paramatma and Bhagavan. If someone not only has this knowledge but is able to clear all doubts if questioned about the Absolute Truth, he is considered better. Further, there may be a learned brahmana-Vaisnava who can explain clearly and eradicate all doubts, but if he does not follow the Vaisnava principles, then he is not situated on a higher level. One must be able to clear all doubts and simultaneously be situated in the brahminical characteristics. Such a person, who knows the purpose of the Vedic injunctions, who can employ the principles laid down in the Vedic literatures and who teaches his disciples in that way, is called an acarya. The position of an acarya is that he executes devotional service with no desire for elevation to a higher position of life.