Happiness is not always through success. Equally, the constant pursuit of success is sure unhappiness. But we have to find the balance. My own thoughts are that parenting is very personal. And we all feel enormous insecurity about parenting. What are they going to think of us 20 years down the line?

The Romans thought of themselves as the chosen people, yet they built the greatest army on Earth by recruiting warriors from any background.

For my senior prom, my father finally said I could go - as long as I was home by 9pm! That was around the time that most people were heading out. When I was little I was so mad at them all the time. Why can't I do this? Why are there so many rules? But looking back now, my parents gave me the foundation to have so many choices in life.

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.

Both of my girls have very high self-esteem because they were both able to master certain things; I should think that's good for their confidence.

All decent parents want to do what's best for their children. The Chinese just have a totally different idea of how to do that.

Happiness is not always through success. Equally, the constant pursuit of success is sure unhappiness. But we have to find the balance. My own thoughts are that parenting is very personal. And we all feel enormous insecurity about parenting. What are they going to think of us 20 years down the line?