As to the remaining properties that are either purely particular (for instance, the sun's being of a certain magnitude or shape) or less clearly understood (for instance, light, sound, pain, and suchlike), although they are very doubtful and uncertain, yet this basic fact, that God is no deceiver, and that therefore it cannot be the case that any falsity should be found in my opinions, unless there is also some God given faculty in me for correcting it, offers me a firm hope of discovering the truth with respect to them as well.