There are two kinds of vidya – Paravidya, which cannot be seen or absorbed, is still forever and is capable of understanding Brahman; and Aparavidya, which consists of the four vedas, six vedangas, Shiksha, Kalpa, Vyakarana, Nirukta, Chandas, Apidhana, Meemamsa, Dharmashastra, Purana, along with Nyayashastra, Vaidyashastra, Gandharvashastra, Dhanurveda and Arthashastra.