I been t'inkin' 'bout de preachah; whut he said de othah night,
‘Bout hit bein' people's dooty, fu' to keep dey faces bright;
How one ought to live so pleasant dat ouah tempah never riles,
Meetin' evahbody roun' us wid ouah very nicest smiles.
Dat 's all right, I ain't a-sputin' not a t'ing dat soun's lak fac',
But you don't ketch folks a-grinnin' wid a misery in de back;
An' you don't fin' dem a-smilin' w'en dey 's hongry ez kin be,
Here Dunbar describes  the epic of reciprocity   “Do onto other as you would have them do onto you”. A tenet of Christianity that is often attributed to  Karmic justice . Within this tenet, one is a product of the positive/negative energy that they put into the world, which in time comes back upon them. 

Philosophy