2nd-century Indian writers

Nāgārjuna (, ; ) was an Indian philosopher and Mahāyāna Buddhist monk of the Madhyamaka (Centrism, Middle Way) school. Nāgārjuna is widely considered one of the most important Buddhist philosophers. He was the founder of the Madhyamaka school of Buddhist philosophy and a defender of the Mahāyāna movement. His Mūlamadhyamakakārikā (Root Verses on Madhyamaka, MMK) is the most important text on the Madhyamaka philosophy of emptiness. The MMK inspired a large number of commentaries in Sanskrit, Chinese, Tibetan, Korean and Japanese and continues to be studied today.

Vācaka Umāsvāti, also spelled as Vācaka Umasvati and known as Vācaka Umāsvāmī, was an Indian scholar, possibly between the 2nd and 5th centuries CE, known for his foundational writings on Jainism. He authored the Jainatext Tattvartha Sutra (literally '"All That Is", also called Tattvarthadhigama Sutra). According to historian Moriz Winternitz, Umāsvāti may have been a Śvetāmbara ascetic as his views correspond more with the Śvetāmbara sect than with the Digambara sect, and that the latter is 'hardly entitled to claim him.' Umāsvāti's work was the first Sanskrit language text on Jaina philosoph