"Prosperity is only an instrument to be used, not a deity to be worshiped." – Calvin Coolidge
So says a man who had a whole orchestra full of instruments at a time when most folks didn't have two spoons to slap together. I'm not sure when he said this, but if it was during the Great Depression then it smacks of Marie Antoinette telling her poor to eat cake.
A shovel is only an instrument to help gain prosperity, but if you don't have one it doesn't matter what marvelous ditches you would have dug, you're not going to put food in your children's mouths.
On the other hand, it looks like a good Protestant work ethic, and I like it (despite my being a good papist).