From Tagore’s beautiful words, ‘Ei BharaterMaha-Manaber Sagar-tirey’(From the shores of the vast ocean of humanity, India) to Nehru’s ‘Unity in Diversity’, we have excellent poetic expressions and vivid descriptions of the wondrous plurality that personifies India. But we need to delve deeper into the process through which this unity was actually achieved amidst wide diversity and Deepavali or Diwali is a good case study of the process.