Who said "I have learned that the only truth is power."?

This quote is attributed to Thanos.

I have learned that the only truth is power. - Thanos

"I have learned that the only truth is power."

Thanos Knowledge

"I am inevitable."

"The hardest choices require the strongest wills."

"Perfectly balanced, as all things should be."

"You should have aimed for the head."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."