"Goodness is the only investment that never fails." 

-Henry David Thoreau 

        What this means is that doing the right thing never goes wrong. If you do the right thing, people will realize it. Not only will they realize it, but they'll appreciate it as well. You do the right thing without anything in exchange. That's how it should always be. Investing is goodness is what you should always have in mind. You should always be good. For example, if you find a wallet on the floor, and it has that person's address. You return it to the person because it's the right thing to do. You always have to choose the right.