Who said "Work harder—you'll merely tire before the end."?

This quote is attributed to Grim.

Work harder—you'll merely tire before the end. - Grim

"Work harder—you'll merely tire before the end."

Grim Work

"I'm a creature of pure evil, and I find your optimism... disturbing."

"Foolish boy, your mortal comprehension cannot fathom my dark intentions."

"Death is my business, and business is good."

"Your pitiful existence amuses me."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."