Faced with the choice between changing one's mind and proving there is no need to do so, almost everyone gets busy on the proof.

Faced with the choice between changing one's mind and proving there is no need to do so, almost everyone gets busy on the proof.

面对改变主意和证明没有必要这样做之间的选择，几乎每个人都忙着证明。

-- John Kenneth Galbraith 加尔布雷思