Mental health four-word idiom

People who know life: people who are considerate. Refers to people who are open-minded and content with their fate.

Source: Tang "Teng Xu": "A gentleman is poor, know life, and a talent is know life."

Master: a man of great learning who knows the past and the present. Refers to an open-minded and knowledgeable person.

Source: Song Luyou's "Please take advantage of the old sparse": "I hope to respect the official, I am the master. * * * Burning the lamp of wisdom, I did not hesitate to judge the blank pen. I thought hard and won. "

Open-minded, magnanimous.