"Goodness is the only investment that never fails."

Henry David Thoreau 

This is small Quote but with a very big meaning. what this is trying to say is that is that the more you do good the more your going to succeed in life and the wealthier you will be and become. when you do good karma will always pay you back in the future. when you do good things it bring joy and happiness but when you choose the wrong you will not succeed because your choosing the wrong and karma doesn't like that. for example if you choose  to do very well in school you should trust that your handwork is going to pay off in the future.