"What's terrible is to pretend that the second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better."

"Children's literature should be taken seriously because it shapes young minds."

A 'performative' utterance is not true or false， but happy or unhappy.

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

跨国合作对解决全球粮食问题至关重要。