“There are four kinds of lights, monks.
(1) The light of the moon,
(2) The light of the sun,
(3) The light of fire,
(4) and the light of wisdom. 
These are the four kinds of light, monks.
The best out of these four kinds of light, monks,
is the light of wisdom.”
 Candāloko, sūriyāloko, aggāloko, paññāloko