Who said "I do not accept failure—I do not understand the concept."?

This quote is attributed to Frieza.

I do not accept failure—I do not understand the concept. - Frieza

"I do not accept failure—I do not understand the concept."

Frieza Perseverance

"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."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."