Who said "Power is the only law that matters."?

This quote is attributed to Frieza.

Power is the only law that matters. - Frieza

"Power is the only law that matters."

Frieza Justice

"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."

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."