The deep, personal material of the latter half of your life is your children. You can write about your parents when they're gone, but your children are still going to be here, and you're going to want them to come and visit you in the nursing home.

在科学中，最重要的不是获得新的事实，而是发现新的思考方式。

The beauty of mathematics lies in its ability to reveal the underlying simplicity in what appears to be complex.

解释：善念不可轻易丧失，恶念不能肆意滋长。