Such is the nature of SPIRIT, or that which acts, that it cannot be of itself perceived, BUT ONLY BY THE EFFECTS WHICH IT PRODUCETH. If any man shall doubt of the truth of what is here delivered, let him but reflect and try if he can frame the idea of any power or active being, and whether he has ideas of two principal powers, marked by the names WILL and UNDERSTANDING, distinct from each other as well as from a third idea of Substance or Being in general, with a relative notion of its supporting or being the subject of the aforesaid powers-which is signified by the name SOUL or SPIRIT. This is what some hold;
Hain da bakana "Izpirituaren" edo ihardun dihardunaren izaera, non bera berez hautemanezina den, sortarazten dituen efektuen bidez bakarrik ezagutu ahal delarik. Hemen esandakoa egia ote den dudan jartzen badu baten batek, gogoetan para eta saia dadila ikusten ea ahalmen edo izaki ihardunkor baten ideiarik eratu ahal duen eta ea "nahimena" eta "adimendua" izena daramaten ahalmenen ideiarik daukan, hauek diferenteak direlarik hala bata bestearengandik, nola substantzia edo orokorrean izakiaren ideiatik, zeinek aipatu ahalmenen euskarri edo subjektuaren ideia barnesartzen duen, "izpiritu" edo "arima" izena ukanez.