Kiyosaki's CASHFLOW Quadrant divides all ways of earning income into four types, each represented by a letter. E (Employee): You trade time for a fixed income. Security is the primary value. The risk is borne by the employer. The tax system is least favourable to this quadrant: income is taxed before you receive it. S (Self-Employed): You own a job. You trade time for income at a higher rate than an employee, but if you stop working, the income stops. Doctors, lawyers, freelancers, and most small business owners are in this quadrant. The business revolves entirely around them. B (Business Owner): You own a system that employs others or operates independently of your direct effort. The business can run without you. This is where leverage begins. Tax is more favourable because businesses can deduct expenses before paying tax. I (Investor): Your money works for you. You earn income from assets: property, stocks, businesses you own but do not run. This is the quadrant where true financial freedom lives. Kiyosaki's argument is that most people are conditioned to aim for E or S, where they trade time for money with diminishing returns. The goal is to move to B or I, where systems and assets generate income regardless of the hours you work. The path from S to B is particularly difficult because it requires a shift in identity: from doing the work yourself to building a team and system that does the work.