16. For instance: let MAN be that concerning which you would by these first principles demonstrate anything, and we shall see, that so far as demonstration is by these principles, it is only verbal, and gives us no certain, universal, true proposition, or knowledge, of any being existing without us.
16. Esate baterako, demagun printzipio horien bidez gizakiari buruz zerbait frogatu nahi dugula;