He has a closed mind.

他思想僵化守旧。

《牛津词典》

A closed mind unreceptive to new ideas.

封闭的头脑不易接受新事物。

youdao

This is not a man of closed mind or mean spirit.

此举表明他不是头脑闭塞、灵魂卑劣的人。

youdao

I do it every week. It just so happens that this argument is more closed, more settled, in my own mind.

我每个星期都这样做，只是现在这个讨论,在我心中，是更不公开的，更稳定的。

耶鲁公开课 - 1945年后的美国小说课程节选

This is not a man of closed mind or mean spirit.

ECONOMIST: The man behind the myth

Home office lawyers argue Ms Smith did not have a closed mind in looking at the issue, the government repeatedly made its position clear and acted within its powers.

BBC: Smith 'wrong' on police pay cut

With this in mind, the government has closed its frontier with Iraq.

ECONOMIST: Preparing for the worst