Mentally Strong People : The 13 Things they Avoid

For all the time executives spend concerned about physical strength and health, when it comes down to it, mental strength can mean even more. Particularly for entrepreneurs, numerous articles talk about critical characteristics of mental strength—tenacity, “grit,” optimism, and an unfailing ability as Forbes contributor David Williams says, to “fail up.” More at Forbes

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How Many Tulips Can You Buy With One Bitcoin?

Bitcoin’s sudden rise has people thinking about the ludicrous heights that tulips achieved in the Netherlands in the 1630s. At the peak of that bubble, a single tulip bulb could cost more than ten times a craftsman’s annual salary. While some of these prices were “justified” by market forces—the rarest breeds were enviable luxury goods—the…

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