For some, it was his child-like demeanour which made him affable and for some, it was his inspirational vision and work in the field of science which made A.P.J. Abdul Kalam a "universally-loved" Bharat Ratna, who managed to be in politics without being a "politician".

Bollywood celebrities paid heartfelt tributes to the former president, who suddenly passed away on Monday evening in Shillong.