Who said "Doubt is the poison that kills from within."?

This quote is attributed to Darth Maul.

Doubt is the poison that kills from within. - Darth Maul

"Doubt is the poison that kills from within."

Darth Maul Faith

"At last we will reveal ourselves to the Jedi. At last we will have revenge."

"The suffering you feel now will forge you into something greater."

"Patience is the weapon of the truly powerful."

"I am darkness given form, and I hunger for your destruction."

"Faith guides me through difficult times."

"Faith is believing when you can't see."

"You have to believe in something, or you'll fall for anything."

"Faith in God and in each other is what sustains us"