I don’t have anything negative to say about him - and the many positives are well known - i’ll just say that great man theory is just as wrong in science as it is in history. Science is a collective endeavor and always has been. It is not driven by individual genius as liberal propaganda would have us believe but by the hard work of many people, most of whom are forgotten. That’s not to say that individual exceptional people are not important but that they are usually overemphasized.