That ought not to be allowed to the pursuer, which is not permitted to the defender.
Non decipitur, qui scit se decipi.
He is not deceived, who knows that he is himself deceived.
Non defendere videtur, non tantum qui latitat, sed et is qui præsens negat se defendere, aut non vult suscipere actionem.
Not only he who sculks, but likewise he who when present refuses to defend himself, or does not wish to undertake an action, seems not to defend.
Non effecit affectus nisi sequatur effectus.
The inclination has had no effect, unless the effect follow.
Non est disputandum contra principia negantem.
We must not dispute against a person denying first principles.
Non est lex sed servitus ad tenere quibus non consenseris.