It's not a loss you ever come to terms with. You believe he will always be there, may be holding a cup of tea in the cafeteria, discussing what he currently finds interesting in science or world. He was a visionary leader. A charismatic person, whose enthusiasm and love for science defied age or stature. He was our guru, our friend and our idol. A great man, whose contributions can not only be summarized in the number of awards he won, but the number of hearts and minds he touched. You will be missed sorely Sir, and it's only with a heavy heart we will ever be able to let you go.