In a reference to an earlier book, Crossroads of Twilight Chapter 24, Rand finds himself thinking about the creators plans and philosophy in general, but he realizes this isnt something he would normally think about and that it must be LTTs thoughts. This always struck me as odd because i don't believe LTT was into Philosophy much either. Ishamel on the other hand was a noted philosopher in the Age of Legends.
Also "But he could feel Lews Therin nodding in approval, a man listening to someone else." This seems to imply it was not Lews Therins thoughts either. If i had to bet money i would