Tradition
St. Bonaventure
The Mind's Road to God
Chapter Three · Part 2 of 2
7. All these sciences have certain and infallible rules, like rays of light descending from the eternal law into our minds. And thus our minds, illumined and suffused by such great radiance, unless they be blind, can be led through themselves alone to the contemplation of that eternal light. The irradiation and consideration of this light holds the wise suspended in wonder; and, on the other hand, it leads into confusion the foolish, who do not believe that they may understand. Hence this prophecy is fulfilled: "Thou enlightenest wonderfully from the everlasting hills. All the foolish of heart were troubled" [Ps. 75:5-6].
Source: The Mind's Road to God (CCEL)