Explanation:

Ishwar Chand Vidyasagar

The title 'Vidyasagar' (ocean of knowledge) was given to him due to his vast knowledge in almost all the subjects. Poet Michael Madhusudan Dutta while writing about Ishwar Iswar Chandra Vidyasagar Chandra said: "The genius and wisdom of an ancient sage, the energy of an Englishman and the heart of a Bengali mother". He was a well-known writer, intellectual and above all a staunch follower of humanity. He was the great scholar, academician and reformer

He was a part of the larger social movement called the Bengal Renaissance, which started with the enlightened leadership of Raja Rammohan Roy. He brought a revolution in the education system of Bengal. In his book, "Barno-Porichoy" (Introduction to the letter), Vidyasagar refined the Bengali language and made it accessible to the common strata of the society. He used to spend a part of his scholarships and salary for the welfare of those poor people. He would also buy medicine for the sick.