The quality of mercy is not strained
It droppeth like the gentle rain from heaven upon the place beneath.
Tis twice blessed it blesseth him that gives and him that receives
His mightiest in the mightiest
It becomes the enthroned monarch better than his crown
The sceptre shows the force of temporal power that attribute to awe and majesty wherein doth rest the fear and dread of kings
But mercy is above this sceptred sway it is enthroned in the heart of kings
And temporal power doth then show likest god's when mercy seasons justice.
Merchant of Venice
(From memory probably full of mistakes)