nay, how they come to know that they themselves think, when they themselves do not perceive it. This, I am afraid, is to be sure without proofs, and to know without perceiving.
are, nola dakiten pentsatu egiten dutela, berek hori hautematen ez dutenez gero. Hau, beldur naiz, frogarik gabe ziur egotea da, eta hauteman gabe ezagutzea.