Be Kind …… Always
It’s the only non-debatable behavior to have as a means toward a better end, a positive end.
True, there are others that will serve us very well too:
Be smart
Be resourceful
Be conscientious
Be motivated
Be hard working
But none of them will pave the path to happiness and righteousness without kindness. Yet kindness CAN pave that path all by itself.
Kindness, compassion, and empathy (which I lump together under just “Kindness”) are all we need to give our lives meaning and make the world a better place.