Philologist

The Philologist is the leader of the ascetic priests in Halo: Contact Harvest. He later becomes the High Prophet of Mercy.

Trivia
Philology is derived from the Greek terms philos (φίλος) meaning love and logos (λόγος) meaning word. Philology is more accurately defined as "an affinity toward the learning of the backgrounds as well as the current usages of spoken or written methods of communication". Philologists are "lovers of words".