Personality Check . . .
Have you ever taken the Jung-Myers-Briggs Personality Profile? It's really an interesting profile. Not everyone who takes it will agree with the results, but in my case I've taken it a number of different times over the years and it always comes out the same. I am an INTJ which stands for "Introverted, Intuitive, Thinking, Judging". According to my "scores" I am a "mastermind rational".
It is in their abilities that Masterminds differ from the other Rationals, while in most of their attitudes they are just like the others. However there is one attitude that sets them apart from other Rationals: they tend to be much more self-confident than the rest, having, for obscure reasons, developed a very strong will. They are rather rare, comprising no more than, say, one percent of the population.
Other famous "Mastermind Rationals" are listed as being Dwight D. Eisenhower and Ayn Rand.
Just a fun thing to check out for a Monday morning!