Who said "I am the only one who knows what needs to be done."?

This quote is attributed to Thanos.

I am the only one who knows what needs to be done. - Thanos

"I am the only one who knows what needs to be done."

Thanos Leadership

"I am inevitable."

"The hardest choices require the strongest wills."

"Perfectly balanced, as all things should be."

"You should have aimed for the head."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"