2 sentences for 理智 (lǐ​zhì — reason)

1. 他的感情战胜了理智。

   tā de gǎn​qíng zhàn​shèng le lǐ​zhì.

   His emotions overcame his reason.

   Source: Dong Chinese Dictionary

2. 强烈的嫉妒心灼伤了他的理智。

   qiáng​liè de jí​dù​xīn zhuó​shāng le tā de lǐ​zhì.

   Intense jealousy scorched his reason.

   Source: Dong Chinese Dictionary