My youngest sister, Cindy, has Down syndrome, and I remember my mother spending hours and hours with her, teaching her to tie her shoelaces on her own, drilling multiplication tables with Cindy, practicing piano every day with her. No one expected Cindy to get a Ph.D.! But my mom wanted her to be the best she could be, within her limits.

You know, parenting is so personal. And we're all afraid that we didn't quite get it right. And it feels like the stakes are so high. By we - what if we made a mistake?

I do think that maybe, even subconsciously, a lot of parents in the West are wondering, have we gone too far in the direction of coddling and protecting - you know, you see kids, sometimes that seem very rude and disrespectful. And the more important thing is they don't seem that happy.

I kind of - I like my life, I feel I have lots of opportunities. And my parents actually having had such high expectations for me - I would say it's the greatest gift that anyone has ever given me. I complained a lot when I was little, but that's how I feel now. And that's why I tried to do the same with my two daughters.

Do you know what a foreign accent is? It's a sign of bravery.

Once you get to the Enlightenment, the way that powers get to be hyperpowers isn't just by conquest. It's through commerce and innovation. Societies like the Dutch Republic and the United States used tolerance to become a magnet for enterprising immigrants.

The Chinese model calls for giving your kids very little choice - and I've come to see that you can go too far with that. On the other hand, I also believe that Western parents sometimes give their young kids too much choice.