And thus men want proofs, who have not the convenience or opportunity to make experiments and observations themselves, tending to the proof of any proposition;
2. Lehenik, frogarik eza aipatzen dudanean, ez naiz ari soilik inon ere aurkitzen ez diren eta, beraz, inon ezin eskura daitezkeen frogen faltaz, baizik baita nonbait existitzen diren edota eskura zitezkeen frogen faltaz ere.