A fool may make money, but a wise man should spend it.

Earning wealth does not by itself prove sound judgment. The saying contrasts the chance or skill involved in acquiring money with the discernment needed to use it responsibly and to good effect.

It advises that spending is a practical test of wisdom: money should be directed thoughtfully rather than squandered or hoarded without purpose. Its broad contrast is aphoristic, not a reliable rule that all wealthy people are prudent or that unsuccessful earners are foolish.

Use it when discussing prudent financial choices, especially when someone treats earning as more important than budgeting, generosity, investment, or responsible consumption. Its contrast is aphoristic and may sound judgmental if aimed directly at a person's spending.