Who said "The dead cannot challenge me."?

This quote is attributed to Darth Maul.

The dead cannot challenge me. - Darth Maul

"The dead cannot challenge me."

Darth Maul Death

"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."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."