Who said "There is no greater weapon than a human child."?

This quote is attributed to Graff.

There is no greater weapon than a human child. - Graff

"There is no greater weapon than a human child."

Graff Power

Character in Ender's Game

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"A commander's most important job is to give orders that can be obeyed."

"Humanity does not ask us to be happy. It merely asks us to be brilliant on its behalf."

"He's too much a leader already."

"You are the hope of humanity."

"Power without control is just destruction."

"Power is not about control, it's about influence"

"The world doesn't need me to be the hero. It just needs me to be dangerous."

"The claws come out when I need them to."