Even knowledge has to be in the fashion, and where it is not, it is wise to affect ignorance.

Even knowledge has to be in the fashion, and where it is not, it is wise to affect ignorance.

即使是知识也必须流行，如果没有流行，假装无知也是明智的。

-- Baltasar Gracián 巴尔塔萨尔·格雷西