Who said "I will show you fear in a handful of sand."?

This quote is attributed to Paul Atreides.

I will show you fear in a handful of sand. - Paul Atreides

"I will show you fear in a handful of sand."

Paul Atreides Fear

Character in Dune

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"I must not fear. Fear is the mind-killer."

"Know that it is ignorance to think one thing; another is required to do another."

"I am just a man. But I have become what I am by accepting myself."

"My father once told me that revenge is a meal best served cold."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."