"Kindness in words creates confidence. Kindness in thinking creates profoundness. Kindness in giving creates love." Lao Tzu
While these are great words to live by, I would also add the kindness we receive and the way we receive it creates a bond of I breakable kindness.
As we give kindness to strangers, let us not forget to receive kindness in return. It might be their kindness that triggers yours. Such willingness allows for growing our confidence, profoundness, and love.