“Goodness is the only investment that never fails.” -Henry David Thoreau

I think this means that when you dedicate yourself to being good you will always get something at the end of it. An example would be helping people out. Let’s say you helped this old lady carry something, she might not give you anything. A good person would not expect anything back and it would just be an investment. What you get in return is happiness and a good heart. When you invest in something else like company wise most of the time it will have its downside and at some points will even fail. Being a good person will always lead you to success. It might take some time but it will happen.