Founded Tattvabodhini Sabha in 1839 along with its organ Tattvabodhini Patrika in Bengali. The organisation was devoted to the systematic study of India’s past with a rational outlook and to the propagation of Rammohan’s ideas.
He joined Brahmo Samaj in 1842. Under Debendranath Tagore, Brahmo Samaj worked on two fronts. One is within Hinduism, it tried to introduce reforms and Two, outside Hinduism, they opposed Christian missionaries as they attempted conversions.
Keshab Chandra Sen joined the Brahmo Samaj in 1858. He was instrumental in popularising the movement, and branches of the Samaj were opened outside Bengal—in the United Provinces, Punjab, Bombay, Madras and other towns.
