For reason's measurements, which attain unto temporal things, do not attain unto things that are free from time-just as hearing does not attain unto whatever is not-audible, even though these things exist and are unattainable by hearing.

Just as all motion is from an unmovable cause, so everything divisible is from an indivisible cause. However, this visible, corporeal world is, assuredly, of a divisible nature, since what is corporeal is divisible. Therefore, this world is from an earlier, indivisible Cause.

Therefore, in the Beginning, which is Truth, all things are Eternal Truth itself

Every angle acknowledges that it is a likeness of true angularity, for [each angle] is angle not insofar as angle exists in itself but insofar as angle exists in something else, viz., in a surface. And so, true angularity is present in creatable and depictable angles as in a likeness of itself.

Nothing could be more beneficial for even the most zealous searcher for knowledge than his being in fact most learned in that very ignorance which is peculiarly his own; and the better a man will have known his own ignorance, the greater his learning will be.

An external thing that is knowable [is knowable] by means of something internal that is consubstantial [with the rational soul].

Within itself the soul sees all things more truly than as they exist in different things outside itself. And the more it goes out unto other things in order to know them, the more it enters into itself in order to know itself.