The age of enlightenment can be best interepted as

The Enlightenment, also known as the Age of Reason, was a philosophical movement that took place primarily in Europe and, later, in North America, during the late 17th and early 18th century. Its participants thought they were illuminating human intellect and culture after the "dark" Middle Ages.

That's what i found on Google when i copied and pasted your statement.

the density would be a smaller number.