Well it is sensible Bob if you understand that those who have achieved historical greatness have always had bitter opponents in their own time and been called all sorts of things by those who opposed them.
Being contraversial or even divisive in their own time has never disqualified anyone from historical greatness - quite the opposite in fact.
The point is that he's done things which will be etched into history, and that isn't diminished because some of his contemporaries don't like him - obviously a lot of people do like him, but that's equally irrelevant.
I don't warm to Kier Hardy but I couldn't and wouldn't deny that he achieved greatness because he effected the history of the country and Europe. That's the test , surely ?