Is the mentat mantra beginning "It is by will alone that I set my mind in motion" from Frank Herbert? Or is it merely a movie addition? If it is in the books, which book(s) and chapter?
It’s always hard to prove the non-existence of something, but:
- I read the original Dune trilogy (and every other Dune book written by Herbert).
- Before I did this, I knew the Mentat mantra and the claim that it was not in the books. Due to this and general confidence in my awareness, I claim that I would have noticed the Mentat mantra (or any variant of it) if it was in the books.
- I did not notice the Mentat mantra.