Voltaire and d’Alembert Elizabeth Salazar And Scott Maxey Voltaire (1694-1778) French author and philosopher. Used satire to demonstrate the ridiculousness of society. Admired philosophies of John Locke and ideas of Isaac Newton. An outspoken critic of religious intolerance and persecution. Believed in religious tolerance. Main Contribution to the Enlightenment- freedom of speech, press, religious tolerance, and opposition to monarchy and slavery. Most Famous Works Treatise on Tolerance- explained that he thought inhumane crimes were influenced by religion. Dictionnaire Philosophique, and Traite de Metaphysique- outlines his natural religious views. Candide- showed his pessimistic views on humanity. Jean Le Rond d’alembert (1717-1783) French mathematician, philosopher, physicist, writer and music theorist. Co-wrote the Encyclopedia. Published raité de dynamique- a treatise on dynamics containing “d’Alembert’s Principle,” which states that Newton’s third law of motion is true for bodies that are free to move as well as for bodies rigidly fixed. Developed partial differential equations, a branch of theory of calculus, and applied it to the problem of vibrating strings Review Questions 1) What book exemplifies Voltaire’s pessimistic views on humanity? 2) How did Voltaire feel about religion? A) Candide B) Treatise on Tolerance C) Traits de Metophysique D) Dictionnare de Philosophique A) Hated it B) Wanted Catholicism to dominate the world C) Wanted religious toleration D) Was Atheist 3) What did Voltaire do? A) Write satirical stories B) Express his views and opinions C) Believe in religious tolerance D) All of the above Review Continued… 4) What was one of d’Alembert’s main achievement? A) Created calculus B) Wrote satirical stories C) Co-wrote the encyclopedia D) None of the above 5) What did d’Alembert develop? A) Partial differential equations B) Geometry C) The dictionary D) Laws of Motion