柠檬问题是指买家无法确定产品质量，因此只愿意支付反映平均质量的价格。

A wise man said， “Before you speak， let your words pass through three gates. At the first gate， ask yourself， “Is it true？” At the second gate ask， “Is it necessary？” At the third gate ask， “Is it kind？”

"We are all time travelers, moving forward at the speed of life, but always looking back."

Freedom is a heavy load, a great and strange burden for the spirit to undertake.

所以江河不嫌弃小溪的水来灌注，就能汇成巨流。被称为圣人的人，不推辞难事，不违背物理，所以能成为天下的大人物。 

我只想创作让人快乐的音乐。

The architect must be humble before the forces of nature.

乳制品行业的每一个挑战都是创新和改进的机会。