数百万人看到苹果落下，但牛顿问了为什么。
I don't care if you're black, white, straight, bisexual, gay, lesbian, short, tall, fat, skinny, rich or poor. If you're nice to me, I'll be nice to you. Simple as that.
生命的历史是联系的历史。
The past is a river, and we are all carried by its currents.
The bigger the brain, the more complex the social world it can manage.