Industry is fortune's right hand and frugality her left.

The saying presents productive work and economical habits as two essential supports of prosperity. It portrays good fortune as aided by both earning resources and avoiding needless expense.

Its paired image emphasizes balance: work can build what one has, while frugality can help retain it. Neither quality alone is presented as the complete foundation for material well-being.

Use it when advising someone that financial security depends on both diligent work and careful spending, rather than on income alone or on chance.