Enlightenment *—Aufklärung* in German, *Lumières* in French *—* is more an idea than a period. But it is an idea that took hold in a particular historical context of revolutionary scientific advances, increasing economic and social freedom, rising literacy and prosperity, and a greater willingness to challenge the authoritarianism of the seventeenth and eighteenth centuries. In *The Wisdom of the Enlightenment* , author Michael K. Kellogg points to 1637, the year that gave us Rene Descartes’ landmark inquiry into truth, as the beginning of a period that radically changed individual human thought and collective societal action. From Descartes’ assertion of “I think, therefore I am,” to the philosophies of Enlightenment thinkers like Moliere, Spinoza, Voltaire, Hume, and Kant, this book charts the new and revolutionary philosophies at a time when progress seemed possible across the whole range of human knowledge and endeavor. In sweeping aside tired superstitions and applying a new scientific methodology, the Enlightenment ideas of progress through free exercise of reason ushered us into the modern world. This engaging and comprehensive survey of Enlightenment thoughts and thinkers is a celebration of the faith that all problems are solvable by human reason. ,