Both Uses

Enlightenment
in
Crime and Punishment, by Dostoyevsky
(Edited)

I might indirectly assist the cause of enlightenment and propaganda.
Chpt 5.1

enlightenment = increased understanding
It's a duty of every man to work for enlightenment and propaganda and the more harshly, perhaps, the better.
Chpt 5.1 *

Definitions:

(1) (enlightenment as in: provided for your enlightenment)
a state of increased understanding

Occasionally, enlightenment can refer more specifically to an elevated spiritual state. In Buddhism & Hinduism is would refer to achieving nirvana.
(2) (Enlightenment as in: during the Enlightenment...)
a primarily 18th-century movement, especially in Europe and the American colonies, that used reason and scientific investigation to challenge beliefs rooted in ancient authority or superstition

Thinkers in Britain, France, Germany, and the American colonies argued that reason—not custom or blind authority—should guide politics, religion, and society. Their ideas stressed individual rights, religious tolerance, and limits on absolute monarchy, and they helped inspire major changes, including the American and French Revolutions.
(3) (meaning too rare to warrant focus)
Less commonly, enlightenment may be used as a proper noun with a non-standard specialized meaning.