Question 67 — The Work of Distinction and the First Day

We must consider next the work of distinction in itself. First, the work of the first day; second, the work of the second day; third, the work of the third day.

Under the first head there are four points of inquiry:

(1) Whether the word light is used in its proper sense in speaking of spiritual things?

• (2) Whether light, in corporeal things, is itself corporeal?
• (3) Whether light is a quality?
• (4) Whether light was fittingly made on the first day?