若是头脑问题，应该不会有不幸福的聪明人——可是有。

If it were brains, there wouldn't be unhappy smart people - and there are.

youdao

更多的问题在我头脑中翻腾。

Many more questions were buzzing around in my head.

《柯林斯英汉双解大词典》

他有发现问题的能力和一个精于谋略的头脑。

He had a nose for trouble and a brilliant tactical mind.

《柯林斯英汉双解大词典》

that these questions would come to the Council my brain is actually too small to process such questions.

这些问题都会摆在委员会面前,我的头脑实际上太小，因而无法思考这些问题。

普林斯顿公开课 - 人性课程节选