Reciprocity

Flowers which exhale their scents grow not less sweet
     By adding fragrance to the balmy gale;
     Flames kindling others, do not therefore fail,
But gain by giving, with increase of heat
And blessed light; the sower’s scattered wheat
     Brings bounteous usury; and throughout the pale
Of Nature’s empire, such is Nature’s law,
That what bestoweth shall receive therefor;
     So do the kindnesses of loving hearts
Expand the bosom by the love they give,
     Receiving good for what their good imparts,
Living by boon of that whereon they live:
They have the more, the more that they bestow,
And into greater joy, for joy dispensed, they grow.