He devoted himself to removing the evil practices prevailing in Hindu socieity. Evils like the caste system, polygamy and the practice of Sati prevailed in the society. He strongly denounced these and took steps to abolish Sati with the help of Governor General Lord William Bentick.
He was a great pioneer of English Education. He gave whole-hearted co-operation to David Hare when the latter founded the famous Hindu College at Calcutta. He also maintained at his own cost an English school at Calcutta. He condemned the appression of peasants by Bengal Zamindars. He demanded the abolition of companies trading rights and the removal of heavy export duties an Indian goods.
He was the first great leader of Modern India. Rabindra Nath Tagore has rightly remarked “Rammohan was the only person in his time, in the whole world of man to realise completely the significance of the modern age”. Rammohan Roy supported the cause of liberty, democracy and nationalism. All his life he fought for social injustice. It was Rammohan Roy who heralded the “New era”. He wanted to synthesise the old and the new and the East and the West.
After the death of Rammohan Roy, Devendra Nath Tagore’s son Dwaraka Nath Tagore took up the leadership of the samaj and placed emphasis on Hindu religious > beliefs incorporated in the Vedas. But the younger members of the samaj did not support him. In 1838 there was a split in the Brahmo Samaj. Keshab Chandra Sen took up the leadership of Brahmo Samaj.
In fact Raja Rammohan Roy played a significant role in the development of modern India. He was regarded as a great innovater. Raja Rammohan Roy and the Brahmo Samaj played an important role in social and religious reforms of 19th century.