Fetching details from the dictionary...
human nature; human heart; human spirit; kindness; sympathy
public feeling; people's sentiments
consciousness; awareness
人心の変化は速いものだ。
Public sentiment shifts rapidly.
彼は困難な時代に人心を掴んだ。
He won public support during difficult times.
信頼を失えば、人心はすぐに離れる。
If trust is lost, public sentiment quickly drifts away.