weigh the pros and cons
In Chinese, the Pinyin is Ku í Q í ngdu ó L ǐ, which means to estimate and speculate according to emotion and reason. It's from Huainanzi · Bing luexun.
Notes on Idioms
Premier: estimate and guess; degree: guess.
The origin of Idioms
"Huainanzi · Bing Lue Xun" says: "those who can cure the five senses, those who can't be overestimated."
Analysis of Idioms
Be considerate and reasonable
Idiom usage
It's not strange to speculate according to emotion and reason. When Premier's emotion is ideal, there are some natural and human feelings. (Chapter 33 of biography of children heroes by Wen Kang in Qing Dynasty)
weigh the pros and cons
turn pale at the mention of a tiger - tán hǔ sè biàn
they have retired from the court to take their their meal - tuì shí zì gōng
unable to suffer the humiliation made by the warder even if he is a whittled phoney one - xuē mù wéi lì