Financial advice was once doled out solely by well-paid professionals, and solely to the wealthy. Then, from the 1980s, celebrity advisers took their tips to large radio and TV audiences, especially in America. Today legions of social-media „finfluencers” spout off recommendations to anyone, anywhere. As in previous decades, the recommendations of investment gurus—how to cut expenses, build a savings fund or avoid scams—are sensible and universal. Beyond the shared basics, though, their counsel differs in telling ways. They may not know it, but they hold up a mirror to their countries’ financial mores, resisting audiences’ vices or accidentally reinforcing them.

In America no young finfluencer yet matches the stature of Dave Ramsey, the gruff 66-year-old radio star turned podcaster. Much of his advice—offered in a stern, fatherly style—is evergreen, built around emergency funds, sensible saving and buying shares for the long term.

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Mr Ramsey’s advice, however, is puritanical in its attitude to debt. Sensibly, he urges listeners to pay off high-interest consumer debts early. But he also suggests that anyone already saving for retirement or childrens’ education should pay off their mortgages as fast as possible, too—even low-interest loans secured before 2022.