noun, preposition · a systematic body of ideas and beliefs, especially those belonging to a particular group, period, or movement

他深受儒家思想的影响。

noun · the process or faculty of using one's mind; mental activity or one's way of thinking

我们要解放思想，实事求是。

noun · a specific concept, notion, or belief held by an individual

这是一个非常有深度的思想。