Here, father, take the shadow of this tree
For your good host. Pray that the right may thrive.
If ever I return to you again,
I’ll bring you comfort.
– William Shakespeare
King Lear, Act 5, Scene 2. Edgar leads his father Gloucester to shelter under a tree, so that he can rest there during the battle between the forces loyal to Lear and Cordelia and the forces opposed. Then he leaves Gloucester, but assures him that if he ever returns again, he will bring him comfort. But things don’t turn out that way.