He has a mentality that denigrates everything he doesn't understand.

他有一种心态，诋毁一切不懂得的事情。

It denigrates and belittles the qualities needed to care, such as patience and gentleness.

它贬低和轻视了照顾质量，例如耐心和善。

He denigrates the conclusions of intelligence professionals and then later denies having done so.

他诋毁情报专业人员的结论，然后又否认自己这么干过。