I prefer Hero of Alexandria as the “greatest genius”. His inventions actually worked. Imagine: a steam engine two millennia ago..Solomon was supposedly the wisest, and there’s no doubt he had incredible knowledge and economic dynamism, but like Einstein, he habitually made mistakes. (Einstein, for example, had no real understanding of people in why they acted the way they did, and thus many of his ideas on cultures just didn’t work. He also had some really strange ideas of God.) All of the incredible wealth that Solomon acquired was lost in one stroke, five years after his death, when Shishak/Shoshonk of Egypt took it all.