For every dollar you spend purchasing something substantial， expect to pay a dollar in repairs， maintenance， or disposal by the end of its life.

"I'm not interested in heroes. I'm interested in survivors."

The most sustainable solutions often come from the simplest ideas.

我们正在进入一个量子现象将成为工程工具的时代。

We must build a world in which there shall be no economic domination, no exploitation, no unemployment, and no war.

The iron rule of nature is: you get what you reward for. If you want ants to come, you put sugar on the floor.

I’m not a market timer. I’m a value investor.