Natural experiments are a powerful tool for understanding causal relationships in the real world.
"The only way to get rid of a temptation is to yield to it."
建筑有自己的领域,它与生活有着特殊的物理关系。
The meaning of "knowing" has shifted from being able to remember and repeat information to being able to find and use it.
Having less is more; contentment leads to happiness.