"Every family has its secrets, but some secrets are buried deeper than others."

And I urge you to please notice when you are happy, and exclaim or murmur or think at some point, 'If this isn't nice, I don't know what is.'

数学是解开宇宙秘密和理解支配它的基本法则的关键。

I don't know if I'm the best or not, but I always try to be better.

Inequality is not inevitable. It is a result of policy choices.

Every barrel we produce must be done responsibly, with full consideration of environmental and social impacts.