Man of letters, committed intellectual and prolific journalist, Sein Win worked tirelessly for the betterment of his fellow citizens. Neither the 13 years he spent in prison nor the partial paralysis he suffered as a result of a heart attack prevented him from expressing his opinions or giving the benefit of his wisdom to readers and also to the many people who visited his home to listen to him and discuss the future of Burma with him.
Besides writing on politics for several weekly and monthly publications, such as Weekly Eleven Journal to which he contributed from 2005, in his books he turned his attention to topics such as ethics, youth, journalism and love.
Frequently critical of the military government, in particular in interviews he gave to Burmese media outlets in exile, he used 15 different pen names and his work was frequently censored by the junta. In 2006, his name was removed from a list of the leading Burmese personalities of 2005 published by Weekly Eleven Journal.
In March 2008, his work was banned completely from all publications on the orders of the government censor board, after he made highly critical comments about the government and called for the overthrow of the dictatorship by a popular movement: "Believe in the Burmese people’s heroism. Believe in People Power. Defeat the Despot with People Power."