According to Wikipedia: "The Brahma sĆ«tras, also known as VedÄnta SĆ«tras, are one of the three canonical texts of the VedÄnta school of Hindu philosophy. A thorough study of VedÄnta requires a close examination of these three texts, known in Sanskrit as the Prasthanatrayi, or the three starting points. The Brahma sutras constitute the NyÄya prasthÄna, or "Logic-based starting point", of the above triplet. Thus they are also referred to as the Yukti prasthÄna, since Yukti also means reasoning or logic. While the Upanishads (Ćruti prasthÄna, the starting point of revelation) and the Bhagavad-GÄ«tÄ (Smriti prasthÄna, the starting point of remembered tradition) are the basic source texts of VedÄnta, it is in the Brahma sĆ«tras that the teachings of VedÄnta are set forth in a systematic and logical order."