One should be poor in pocket but not in spirit, don't live by begging.
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history
A folk saying with Ming-Qing currency, often paired with the more formal 君子固穷 ('the gentleman stands firm in poverty') from 《论语·卫灵公》. Appears in the proverb tradition as 人穷志不穷,人贱志不贱 and is quoted in novels like 《儒林外史》.
usage
Modern usage is almost exclusively positive, said of people who refuse to let material hardship degrade their character or lower their goals.