The only thing that can make you wise is your own experience.
No matter how good you get you can always get better, and that's the exciting part.
The best fertilizer is the farmer’s shadow in the field.
To understand the land is to understand ourselves.
信任是通过一致性、诚实和责任感建立的。
你不必总是比别人强，但要比过去的自己更强。
The true cost of coal isn't just in its price, but in how we manage its consequences.