Who says the following and why glory walks hand in hand with your doom?

The phrase "glory walks hand in hand with your doom" is commonly associated with the character of the Witch-King of Angmar in J.R.R. Tolkien's "The Lord of the Rings." This idea reflects the notion that the pursuit of glory, power, or greatness often leads to one's downfall or destruction. It serves as a cautionary reminder that ambition and pride can have dire consequences, intertwining success with potential ruin.