Who said "The weak exist only to serve my purposes."?

This quote is attributed to Frieza.

The weak exist only to serve my purposes. - Frieza

"The weak exist only to serve my purposes."

Frieza Work

"I am the most powerful being in the universe!"

"You dare challenge me? How amusing."

"I have transcended beyond a normal Super Saiyan."

"Your resistance only makes this more entertaining."

"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."