"Fling away your promise if it is found to be wrong"

Tagore's deep aversion to any commitment to the past that could not be modified by contemporary reason extended even to the alleged virtue of invariably keeping past promises. On one occasion when Mahatma Gandhi visited Tagore's school at Santiniketan, a young woman got him to sign her autograph book. Gandhi wrote: "Never make a promise in haste. Having once made it fulfill it at the cost of your life." When he saw this entry, Tagore became agitated. He wrote in the same book a short poem in Bengali to the effect that no one can be made "a prisoner forever with a chain of clay." He went on to conclude in English, possibly so that Gandhi could read it too, "Fling away your promise if it is found to be wrong"

Courtesy :Tagore and his India ,By Amartya Sen