2. Millionaires think they’re rich.

“Rich,” like “poor,” is a relative term. A family living on the American median income of $50,000 a year might think that one living on $500,000 is rich. But that second family, which probably knows families far better off than they are, thinks that you need $5 million a year to be truly rich, and so on.

On Thursday, 44 percent of people voting in an online survey as part of the GOP debate coverage said that a $1 million annual income made a person “rich.” In a 2008 survey of affluent Chicago households, only 22 percent thought a nest egg of $1 million was rich. In March, four out of 10 millionaires surveyed by Fidelity Investments said they do not feel rich. That same month, a majority of investment advisers surveyed in a Scottrade poll said that $1 million isn’t enough for retirement.

Though the average American family is rich beyond the wildest dreams of the average family in Bangladesh, where per capita income recently rose above $700, it’s not much compared with those who summer on beachfront properties in the Hamptons. When John D. Rockefeller learned in 1913 that the late J.P. Morgan had left an estate of $60 million, including a fabulous art collection, he reportedly said: “And to think — he wasn’t even rich.”