Good Debt is debt that someone else pays for you. Bad debt is debt you pay for.

Robert Kiyosaki ‏: One of the basic understandings of the rich is: Good debt is debt that someone else pays for you. Bad debt is debt you pay for.

Rich Dad Poor Dad is the story of Robert Kiyosaki's financial education. He had two 'dads' - one his real dad, who was poor, and the other, his best friend's dad, who was on his way to becoming a very rich man.