Who said "I am eternal; you are merely temporary."?

This quote is attributed to Darth Maul.

I am eternal; you are merely temporary. - Darth Maul

"I am eternal; you are merely temporary."

Darth Maul

"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."