Blake (1757–1827; poet, artist, philosopher, and visionary) wrote profoundly of mercy, love, peace, and the human condition. His metaphor from Auguries of Innocence speaks to possessiveness in relationships:
‘He who binds himself to a joy does the winged life destroy;
He who kisses the joy as it flies lives in eternity's sunrise.’
Blake's idea is that we will lose the object of our love if we restrict or control it. If we allow it freedom, we will find the dawn of eternal hope.