King Lear comes on stage holding his dead daughter, Cordelia. He asks for a mirror to see if she is breathing:
"Howl, howl, howl, howl! O, you are men of stones;
Had I your tongues and eyes, I'd use them so
That heaven's vault should crack. She's gone forever!
I know when one is dead, and when one lives;
She's dead as earth. Lend me a looking glass;
If that her breath will mist of stain the stone,
Why, then she lives."Act 5 Scene 3"
After this terrible event,Kent and Edgar look toward each other, asking:
"Kent: 'Is this the promised end?'
Edgar: 'Or image of that horror?'"
It is like: This is the end that was sought for but now we can see that it is terrible.
These are two nice quotes for an essay. It shows the tragic aspect very well.