- Kautilya is considered a pioneer in the field of economics and political science in India. - The Arthashastra is one of the most important ancient Indian texts on governance and administration. - Barahamihira was a renowned astronomer and mathematician. - Aryabhatta was a celebrated mathematician and astronomer. - Patanjali is known for his work on grammar (Mahabhashya) and yoga (Yoga Sutras).