All Glories to Guru and Gauranga. Om Namo Bhagavate Vasudevaya. Let me offer my respectful obeisance’s unto the Supreme Personality of Godhead, Vasudeva.
First of all let me offer my respectful obeisances to my spiritual master Om Visnupada Srimad Bhaktisiddhanta Sarasvati Gosvami Prabhupada, then my respectful obeisances to the Supreme Personality of Godhead Lord Caitanya Mahaprabhu, who is associated with Sri Advaita Prabhu, Nityananda Prabhu, Gadadhara Prabhu, Srivasa Prabhu, as well as whose eternal assistants are the six gostamis, headed by Srila Rupa Gosvāmi, Sanatana Gosvami Raghunatha Bhatta Gosvami, Gopala Bhatta Gosvami, Śri Jiva Gosvami, Ragaunatha dasa Gosvāmi, as well as whose private secretary is Sri Svarupa Damodara dasa and His eternal attendant Govinda.
Then let us talk about the Brahma-sütra or Vedanta- sutra. There are many comments on the Vedanta sütra. In India especially the system is that anyone who is the head of a religious institution must be well conversed with the Vedanta-sütras, and is expected to write comments on the Vedanta-sütra, without which one is not accepted as an acarya. Acarya means one who knows the purpose of Vedic knowledge. He personally practices them as well as teaches to his disciples the system of Vedic knowledge. There are many dearyas, especially of the taisnava sampradaya, like the four sampradayas: rāmānuja- sampradaya, madhvacarya-sampradaya, visnusvami- sampradaya, and nimbarka-sampradaya. Our sampradaya is called gaudiya-sampradaya, or the Vaisnavas who are in the disciple succession of Lord Caitanya Mahaprabhu. The gaudiya-sampradaya actually belongs to the madhva- sampradaya and the madhva-sampradaya belongs to the brahma-sampradaya.
Besides these four vaiṣṇava-ācārya-sampradayas, there are also non-vaisnava-sampradayas, especially the impersonalist school headed by Sankarācārya. Sankaracārya has written a commentary on the Vedanta- sûtras, known as Sariraka-bhasya. Generally this Sariraka-bhasya made by Sankaracarya is very popular on account of the present Indians being influenced by materialistic activities. But still the other different bhasyas, or commentaries, made by the Vaisnava dcdryas are also available in the gaudiya-sampradaya, specifically headed by Rupa Gosvāmi.