Pubbakārī Sutta
“Bhikkhus,
Two kinds of people are difficult to come by in this world.
What Two?
(1) One who takes the initiative [1] [to be kind] and
One who is grateful and appreciative. [2]
Bhikkhus, these are the two kinds of people
difficult to come by in this world.
[1] Pubbakārī: Thoughtful.