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

Those, however, who saw that one cannot attain wisdom and perennial intellectual life, unless it be given through the gift of grace, and that the goodness of the Almighty God is so great that He hears those who invoke His name, and they gain salvation, became humble, acknowledging that they are ignorant, and directed their life as the life of one desiring eternal wisdom. And that is the life of the virtuous, who proceed in the desire for the other life, which is commended by the saints.

It has been asserted that there is a separate species on the earth to correspond with each one of the stars. Now if the earth provides in each species a focus for the action of each star, why may not a similar provision be made among other heavenly bodies that are subject to the action of their fellows?

But if you search further, you find in yourself nothing similar to God, but rather you affirm that God stands above all this as cause, origin, and the light of life of your intellective soul.

Since beings desire to exist, because to exist is a good thing: they desire the One without which they cannot exist.

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.

For our intellectual spirit has the power of fire in itself. For no other purpose is it sent by God to the earth than that it glow and grow into a flame. When it is excited by admiration, then it grows, just as if the wind entering into a fire excited its potential to actuality. If we apprehend the works of God, we marvel at eternal wisdom.