I have always believed that writing is a way of thinking, not just a way of expressing thoughts.

We are all part of an unbroken chain of life.

I'm a mom first.

Man is by nature a reasonable being, but animals, other than man, are by nature instruments of brute force.

Our ambition is to be the responsible energy major, and that means producing more with less – more energy with fewer emissions.

在数学中，你并不理解事物。你只是习惯了它们。