Madhyamaka (Sanskrit: मध्यमक, Madhyamaka, ; also known as Śūnyavāda) refers primarily to a Mahāyāna Buddhist school of philosophy founded by Nāgārjuna. According to Madhyamaka all phenomena (dharmas) are empty (śūnya) of "nature," a "substance" or "essence" (svabhāva) which gives them "solid and independent existence," because they are dependently co-arisen. But this "emptiness" itself is also "empty": it does not have an existence on its own, nor does it refer to a transcendental reality beyond or above phenomenal reality.