The lemons problem refers to the difficulty in assessing the quality of a product when the seller has more information than the buyer.
“柠檬问题”指的是当卖家比买家掌握更多信息时，评估产品质量的困难。
The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.
The greatest intellectual adventures often begin with a simple "What if?"
To realize one’s nature perfectly---that is what each of us is here for.
我的语言的界限即是我的世界的界限。