"Every fool aspired to be a knave"

[We posted this in 2017, but somehow it still seems timely.] Today's excerpt from Charles Mackay's Extraordinary Popular Delusions and the Madness of Crowds quotes perhaps my favorite line about a time of bubbles, up to and including 2007. Exchange Alley was in a fever of excitement. The Company's stock, which had been at a hundred and thirty the previous day, gradually rose to three hundred, and continued to rise with the most astonishing rapidity during the whole time that the bill in its several stages was under discussion. Mr. Walpole was almost the only statesman in the House who spoke out boldly against it. He warned them, in eloquent and solemn language, of the evils that would ensue. It countenanced, he said, "the dangerous practice of stockjobbing, and would divert the genius of the nation from trade and industry. It would hold out a dangerous lure to decoy the unwary to their ruin, by making them part with the earnings of their labour for a prospect of imaginary wealth." The…