Is money real or not?

"If you can grasp the idea that money is not real, you will grow richer faster."

- Robert Kiyosaki, in Rich Dad Poor Dad

"Rule #1: Never lose money.
Rule #2: See Rule #1."

- Warren Buffett

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My question is, Is money real or not? If Kiyosaki is right, then why would the second richest man in the world (Buffett) advise people to make sure never to lose money? How can one lose something that doesn't exist?

The surprising answer in the next posting.