Knowledge is the most valuable currency
All money is portable power. A form of value.
You may ask what is the most useful, desired, and rare form of value. It is knowledge. It is the only way to become a source of creation through your mind at a will of an instant, and market it like a commodity and use it a resource for others to learn more knowledge off of. It is the only true power, because it is the only true form of value there is.
I fully agree. With education comes knowledge which empowers an individual to create value added products. A thief can steal a person's possession, but will never be able plunder knowledge from anybody.