The tradition of the grammarians is often neglected in Indian philosophy. The grammarians show quite well how deeply linguistics and philosophy was tackled by Indian scholars centuries ago, illustrating the incredible advanced state of Indian philosophical and ontological knowledge compared to other parts of the world. The influence of the grammarians on the other branches of Indian philosophy cannot be over-emphasized. The name of "grammarian" is misleading because it goes farther than that, Indian linguists had an impressively good knowledge of language, both in syntax and semantics, maybe even better than linguists think to have nowadays.
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