On a day last week when I decided to pay it forward in the form of furniture that had served my 3 kids, I came home to a repaired bottom of my driveway. A road crew working on a manhole decided to fill the rut that made us all bottom out for years. And they were gone! I couldn't thank them. Such a kindness. So small and yet so nice. You can't always thank those that preform the acts of kindness, but you can keep them going out of respect.
Kindness changes people.