Irrational exuberance Pink also used the phrase in 2009 in his book "" in the chapter discussing how extrinsic motivation can encourage short-term thinking at the cost of long-term health: "This is the nature of economic bubbles: What seems to be irrational exuberance is ultimately a bad case of extrinsically motivated myopia". Irrational exuberance "Irrational exuberance" is a phrase used by the then-Federal Reserve Board chairman, Alan Greenspan, in a speech given at the American Enterprise Institute during the dot-com bubble of the 1990s. The phrase was interpreted as a warning that the market might be overvalued. Greenspan's comment was made during
The Story of the Youth Who Went Forth to Learn What Fear Was attempts to learn fear, which eventually leads to his awareness of mortality. This tale type did not appear in any early literary collection but is heavily influenced by the medieval adventure of Sir Lancelot du Lac called "", where he spends a night in a haunted castle and undergoes almost the same ordeals as the youth. A father had two sons. The younger, when asked by his father what he would like to learn to support himself, said he would like to learn to shudder. A sexton told the father that he could teach the boy. After teaching him to