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.

With the senses man measures perceptible things, with the intellect he measures intelligible things, and he attains unto supra-intelligible things transcendently.

We see that God has implanted in all things a natural desire to exist with the fullest measure of existence that is compatible with their particular nature. To this end they are endowed with suitable faculties and activities; and by means of these there is in them a discernment that is natural and in keeping with the purpose of their knowledge, which ensures their natural inclination serving its purpose and being able to reach its fulfilment in that object towards which it is attracted by the weight of its own nature.

All visible things would not claim as their king some color of their region, which is actually among the visible things of this region, but rather would say, he is the highest possible beauty of the most lucid and perfect color.

That that which is neither true nor truthlike does not exist. Now, whatever exists, exists otherwise in something else than it exists in itself.

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.

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