He wrote on topics ranging from biology to physics, and astronomy; meanwhile, his poetry ” containing extensive naturalism ” underscored his respect for scientific laws. He also wove the process of science (including narratives of scientists) into many stories contained in such volumes as Se (1937), Tin Sangi (1940), and Galpasalpa (1941).  Illness of 1937-1941 Tagores last four years (19371941) were marked by chronic pain and two long periods of illness.
These began when Tagore lost consciousness in late 1937; he remained comatose and near death for an extended period. This was followed three years later in late 1940 by a similar spell, from which he never recovered. The poetry Tagore wrote in these twilight years are distinctive for their preoccupation with death; these more profound and mystical experimentations allowed Tagore to be branded a modern poet. 3] After extended suffering, Tagore died on August 7, 1941 (22 Shravan 1348) in an upstairs room of the Jorasanko mansion in which he was raised.  This date is still mourned in public functions held across the Bangla-speaking world. The last person to see Tagore alive was Amiya Kumar Sen (brother of Sukumar Sen, the first chief election commissioner); Tagore dictated his last poem to Sen, who wrote it down. Sen later donated the resulting draft to a museum in Kolkata.