"Research is a matter of overcoming obstacles. That's what research is about. There are problems. There are difficulties. It's hard to make sense of a collection of information or whatever. Obstacles are the nature of research. Maybe that's why some people give up. There's always an obstacle. You overcome one to find there's another one."

"This is a very brilliant enemy. You know, it's a brilliant enemy. They develop drugs like the antibiotics, you see it. Antibiotics used to solve every problem. Now one of the biggest problems the worl…"

"I can read ideas from all different people from all different cultures. Without God, we can agree on reality, and I can keep learning where I'm wrong. We can all keep adjusting, so we can really commu…"

"“You know perfectly well there have been attacks on the rule of law, on the independence of the judiciary; abductions around Hong Kong streets; suggestions that Hong Kong’s autonomy needs to be curtai…"

"How did we change? Every one of us has become one thing or another, according to our own understanding. We believe ourselves to be men or women, rich people or poor people. We believe that we are teac…"