在量子力学中，观察的行为会改变被观察的系统。

Forests are the lungs of the earth, and we must protect them with the same urgency as our own health.

The happiest people are those who have discovered that happiness is a choice and not a result of circumstances.

The biggest risk is not taking any risk.

"A key insight in computational learning theory is that the complexity of a learning problem is determined by the complexity of the hypothesis space and the amount of data available."

数学的本质不是使简单的事情复杂化，而是使复杂的事情简单化。