I would have preferred Asimov to say something like "Sagan and minsky are the brightest minds I've encountered in my life." And if you think Asimov is super smart, then you'll respect Sagan and Minsky that much more. And you'll respect Asimov too for not being so egotistical. It doesn't even matter if it's actually true or not.
Minsky, in my experience, demonstrated humility when talking with or listening to him. For that I gain admiration beyond the talent.