Note that on Quirrell’s “Evil Overlord List”, Rule 34 (“I will not turn into a snake. It never helps.”) has been replaced by (translated from Parseltongue) “Become Animaguss. All ssensible people do, if can. Thuss, very rare.” (Per chapter 49)
Or, “I will turn into a snake. It always helps.”
Or, “I will turn into a snake. It always helps.”