I believe MacKay's book (quoted here) is most famous for its account of the Dutch tulip mania[0], which is one of the most notable financial bubbles in history

I believe MacKay's book (quoted here) is most famous for its account of the Dutch tulip mania[0], which is one of the most notable financial bubbles in history (somebody reportedly paid 12 acres of land - 5 hectares - for a single bulb). [0]: https://en.wikipedia.org/wiki/Tulip_mania https://en.wikipedia.org/wiki/Tulip_mania