en·light·en 
(ĕn-lītn)
(ĕn-lītn)tr.v. en·light·ened, en·light·en·ing, en·light·ens
1. To give spiritual or intellectual insight to: "Enlighten the people generally, and tyranny and oppression of body and mind will vanish like evil spirits at the dawn of day" (Thomas Jefferson).
2. To give information to; inform or instruct.
en·lighten·er n.