Which living philosopher has exerted the greatest positive influence on your moral and political views?

MOVING TO FRONT FROM THIS MORNING--ABOUT 650 VOTES OVER THE LAST SIX HOURS, MORE WELCOME!

John Tasioulas (Oxford) posed that query on Twitter, and in his poll offering four choices, Peter Singer won (which sums up the moral triviality of contemporary philosophers in my view).  In the comments, readers offered other possible answers.  So herewith a version of the poll with more choices (reflecting comments on Professor Tasioulas's tweet), plus the option of picking "none."  Have fun!