Heretics of Dune (Dune, #5)

by Frank Herbert

Teg took some reassurance from the realization that neither of these two really enjoyed life. He could see that in them clearly with eyes the Sisterhood had educated. The Honored Matre and Muzzafar had forgotten or, most likely, abandoned everything that supported the survival of joyous humans. He thought they probably no longer were capable of finding a real wellspring of joy in their own flesh. Theirs would have to be mostly a voyeur’s existence, the eternal observer, always remembering what it had been like before they had taken the turning into whatever it was they had become. Even when they wallowed in the performance of something that once had meant gratification, they would have to reach for new extremes each time just to touch the edges of their own memories.