This two-page summary begins with a list of 17th & 18th century scientific discoveries (Galileo, Newton, Lavoisier & Priestly, Jenner) that contributed to the prevailing idea that "through the use of reason we can solve every problem and create a perfect world!" The main theories of Enlightenment thinkers are then encapsulated into a few sentences each, using fill-in-the-blank format for students. Answer key is included. The activity summarizes the ideas of Hobbes, Locke, Voltaire, Montesquieu, Diderot, Rousseau, and Wollstonecraft. Each summary is illustrated by a public domain image of the Enlightenment thinker. When completed, the resource can be used as the basis for other activities to show understanding or compare and contrast philosophes (political philosophers) with each other. One recommended activity is to ask students to write a song (or rap, or cheer) or poem (haiku or sonnet) about a person of the student's choice.