The Spirits' Book
Book Three - Moral Laws
Chapter V - IV. Law of Preservation
Voluntary Deprivations – Mortifications
725. What should we think of the mutilation of the bodies of humans or animals?
“What is the purpose of such a question? Ask yourselves whether something is useful or not. What is useless displeases God, and what is hurtful disappoints the purpose of creation. Rest assured that God only appreciates sentiments that elevate the soul. It is by practicing Divine Law, and not by violating it, that you can shake off your material envelope.”