Who said "My people called me mad. Perhaps. But I am inevitable."?

This quote is attributed to Thanos.

My people called me mad. Perhaps. But I am inevitable. - Thanos

"My people called me mad. Perhaps. But I am inevitable."

Thanos Inspiration

"I am inevitable."

"The hardest choices require the strongest wills."

"Perfectly balanced, as all things should be."

"You should have aimed for the head."

"The best part of living is knowing you survived."

"The world needs heroes."

"Life is too short to live poorly."

"I'd rather be an optimist and be wrong than a pessimist and be right"