Wikipedia: Age of Enlightenment
- Short article on the thought of this period, and its legacy.
- http://en.wikipedia.org/wiki/Age_of_Enlightenment

Active Powers
- Brief article from the Internet Encyclopedia of Philosophy on this term as used in the Scottish "common sense" philosophy.
- http://www.utm.edu/research/iep/a/activepo.htm

18th Century German Philosophy Prior to Kant
- Survey of work of, among others, Christian Thomasius and Christian Wolff; from the Stanford Encyclopedia by Brigitte Sassen.
- http://plato.stanford.edu/entries/18thGerman-preKant/

Scottish Philosophy in the Eighteenth Century
- Survey of Scottish Enlightenment philosophers, including Francis Hutcheson, Henry Home (Lord Kames), and George Campbell; by Alexander Broadie. From the Stanford Encyclopedia of Philosophy.
- http://plato.stanford.edu/entries/scottish-18th/

French Deism
- Brief historical survey of the development of Deism in the French Enlightenment. From the Internet Encyclopedia of Philosophy.
- http://www.utm.edu/research/iep/d/deismfre.htm

Encyclopedists
- Article from the Catholic Encyclopedia by C.A. Dubray. Discusses the group of philosophers who contributed to the Encyclopédie.
- http://www.newadvent.org/cathen/05418a.htm