Reason is a ray of the divine light.

Explanation

Human reason is a gift of Providence — the law built upon reason participates in the divine order, and an unreasonable law is contrary to both God and nature. (Duplicate maxim — see also 1.5.259.)

Where this applies

• Human reason is a divine gift and the law should reflect that.
• An unreasonable law is contrary to both God and nature.
• Reason and the divine order are linked — law built on reason participates in divinity.

See also

• 1.5.259 Reason is a ray of divine light.
• 12.3.5 The law always intends what is agreeable to reason; the law compels no one to do vain or useless things.
• 12.11.1 Human things never prosper where divine things are neglected.