Enlightenment: social, political and philosophical movement of the 17th and 18th centuries emphasizing the free use of reason in the scrutiny of doctrines for the progress of humanity.

Source: What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11.