“There was a survey done a few years ago that affected me greatly. it was discovered that intelligent people either estimate their intelligence accurately or slightly underestimate themselves, but stupid people overestimate their intelligence and by huge margins. (And these were things like straight up math tests, not controversial IQ tests.)”

“Never underestimate your listener's intelligence, or overestimate you listener's information.”

“I suspect the I.Q., SAT, and school grades are tests designed by nerds so they can get high scores in order to call each other intelligent...Smart and wise people who score low on IQ tests, or patently intellectually defective ones, like the former U.S. president George W. Bush, who score high on them (130), are testing the test and not the reverse.”

“The universe is an intelligence test.”

“No one in this world, so far as I know—and I have searched the record for years, and employed agents to help me—has ever lost money by underestimating the intelligence of the great masses of the plain people.”

“The difference between stupid and intelligent people – and this is true whether or not they are well-educated – is that intelligent people can handle subtlety. ”