In the intellectual ferment of the 19th and early 20th centuries, several ideologies and personalities contributed to the philosophical underpinnings of Indian nationalism. Among these, a notable figure argued for the synthesis of Eastern spiritual wisdom and Western scientific progress as a foundation for India's national resurgence. This thinker's ideas were instrumental in inspiring the nationalist movement by advocating for a harmonious blend of India's spiritual heritage with modern ideals of liberty, democracy, and science. Who was this influential figure in the intellectual rise of Indian nationalism?