I learnt so much from him, says Sonia Gandhi in letter to Pranab Mukherjee's daughter Sharmistha

Congress President Sonia Gandhi on Monday expressed her condolences on the passing away of former President Pranab Mukherjee, saying that his life over the past 50 years mirrored 50 years of the history of India and he played a crucial role in shaping the course of events as well as actively participating in them.