Who said "Truth is often the most difficult thing to face."?

This quote is attributed to Paul Atreides.

Truth is often the most difficult thing to face. - Paul Atreides

"Truth is often the most difficult thing to face."

Paul Atreides Truth

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."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."