When you have nobody you can make a cup of tea for, when nobody needs you, that's when I think life is over.

We must balance economic growth with environmental stewardship.

"The best stories are the ones that make you feel something, that stay with you long after you've finished reading."

The modern state is characterized by its ability to concentrate and use power effectively.

数学是一种思维方式，而不仅仅是一堆事实。