"Think wrongly, if you please, but in all cases, think for yourself."
Sustainable forestry is not an option; it's an obligation.
Theorems are not discovered by accident.
The best leaders are those who empower others to find their own solutions.
在现实生活中，善与恶的战争中最困难的一面是决定谁是善谁是恶。
最好的技术是你感受不到的技术。