Question

what is the sarvepalli radhakrishnan contribution to nation?

Answer 1

He is a renowned Philosopher. Despite simplicity he bore a dignified personality and stature well-becoming of a President of a great nation. However he remained silent against Congress wrong doings till he came to know of his tenure likely to end with no possible extensions and spoke against them in his pre-independence day Presidential speech. This is timidity and Hippocratic of him. However he  was not known to be a rubber stamp.

Answer 2

He served as The vice President and The President of India. He was a former teacher.
We celebrate teacher's day in his memory.