Who said "In the desert, there is only survival or death."?

This quote is attributed to Liet-Kynes.

In the desert, there is only survival or death. - Liet-Kynes

"In the desert, there is only survival or death."

Liet-Kynes Perseverance

Character in Dune

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"The highest function of ecology is the understanding of consequences."

"Mountains are for conquering, but the desert is for understanding."

"The highest function of ecology is the understanding of consequences."

"Water is the most precious substance on Arrakis, beyond spice, beyond any treasure."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."