Good health is not something we can buy. However, it can be an extremely valuable savings account.
Economics is all about consumption. People either spend money now or they use financial instruments - like bonds, stocks and savings accounts - so they can spend more later.
Cash - in savings accounts, short-term CDs or money market deposits - is great for an emergency fund. But to fulfill a long-term investment goal like funding your retirement, consider buying stocks. The more distant your financial target, the longer inflation will gnaw at the purchasing power of your money.
Wealth can only be accumulated by the earnings of industry and the savings of frugality.
I'm thankful for the three ounce Ziploc bag, so that I have somewhere to put my savings.