The best measure of intelligence that I can think of (barring of course SATs, ACTs, Mensa testing, IQ tests, phrenology, physiognomy, and magic) is the extent to which one can make what is in his or her mind occur in reality. There are many, many types of intelligence -- Leonardo da Vinci was a genius of drawing, Paganini of the violin, J.P. Morgan of business and money, Melville of writing -- all measured by the extent to which a given person can make what they imagine come to life.
This is not to be confused with a measure of goodness. Goodness has much more to do with what you imagine in the first place.
Are you smart enough to trick yourself?
