I had the pleasure of attending a presentation he held a bit over a decade ago (public event hosted by the university, back when I was a student).

I didn't get an opportunity to talk to him personally after the event as there was a large queue of senior academics and other VIPs already waiting, but I did see him taking the time to talk first to some school-aged kids who had attended.

He seems like a really nice, humble guy, and looked genuinely happy to be encouraging the kids' interest in the sciences.