古代以天下为主体，君主为客体，君主一生所经营的，都是为了天下。

你看到了，但你没有观察到。

As a kid， I spent my summers with my grandparents on their ranch in Texas. I helped fix windmills， vaccinate cattle， and do other chores. We also watched soap operas every afternoon， especially "Days of our Lives." My grandparents belonged to a Caravan Club， a group of Airstream trailer owners who travel together around the U.S. and Canada. And every few summers， we'd join the caravan. We'd hitch up the Airstream trailer to my grandfather's car， and off we'd go， in a line with 300 other Airstream adventurers. I loved and worshipped my grandparents and I really looked forward to these trips. On one particular trip， I was about 10 years old. I was rolling around in the big bench seat in the back of the car. My grandfather was driving. And my grandmother had the passenger seat. She smoked throughout these trips， and I hated the smell.

The dead are our teachers, if we know how to listen.

To stay ahead, you must constantly adapt and evolve.

The time at our disposal each day is elastic; the passions we feel dilate it, those we inspire contract it; and habit fills up what remains.

Sustainability is not just a trend; it's a responsibility we owe to the next generation.

善于学习的人，能够透彻地知道事情的道理；善于实践的人，能够把事情疑难之处弄清楚。