我正充实地生活着，不会浪费任何时间。
I'm living life to the fullest and I'm not going to waste any time.
数学的本质在于其自由性。
The best reactions are those that work the first time and every time.
医生对待病患的例子
"Memory is a strange thing. It doesn't work like I thought it did. We are so used to thinking of it as a camera or a tape recorder, but it's not like that at all. It's more like a painter. It creates a picture, but it's not always the same picture."