New Delhi, March 7 -- Inside the dimly lit interiors of Kiran Nadar Museum of Art (KNMA) in Delhi, 87-year-old Gulammohammed Sheikh leads a group of art enthusiasts on a walkthrough of his latest exhibition, Of Worlds Within Worlds. It's a chilly morning in early February, but this grand retrospective of a lifetime's brilliance runs till the end of June, which is just as well. To absorb the full magnificence of the show, you'll probably want to return to KNMA multiple times. "Early on, I decided I'd bring as many worlds as possible into my work," Sheikh says, as we pause before Returning Home After a Long Absence, a magisterial oil on canvas he had made between 1969-73. It's a deeply moving, autobiographical work, with a portrait of his m...