When it comes to gathering income, you’ve probably thought in terms of earning as much of it as possible — likely through a stable full-time job and some side hustles. Mostly, you’re concerned about how much you earn and what you can do with it to grow your wealth. But Robert Kiyosaki, famed financial expert and mastermind of the “Rich Dad, Poor Dad” empire, has parsed things even further. He has identified four distinct income quadrants, each representing an area of your financial — and sometimes person ...