For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and deity; so that they are without excuse:
All Commentaries on Romans 1:20 Go To Romans 1
Basil the Great
AD 379
You will find that the world was not devised at random or to no purpose, but to contribute to some useful end and to the great advantage of all beings. It is truly a training place for rational souls and a school for attaining the knowledge of God. Through visible and perceptible objects it provides guidance to the mind for the contemplation of the invisible. Homily One, Creation of the Heavens and Earth