Tragedy is when I cut my finger. Comedy is when you walk into an open sewer and die.

创新是解决世界最紧迫问题的关键。

The man with a toothache thinks everyone happy whose teeth are sound. The poverty-stricken man makes the same mistake about the rich.

The psychologist must be a meticulous observer.

Sustainability isn't a trend—it's the future of food production.

心灵不是被动的镜子，而是生活的积极参与者。

The causal approach is about understanding the mechanisms that generate the data.