This was the famous philosophy of optimism that affected the minds of people during the wars and disasters of the eighteenth century. In this context, Voltaire began to use ridicule in his literary works, including the novel "Kennede", which sparked controversy with its harsh criticism behind the interface of innocence. This novel tells the story of Kendeed, who was taught by optimism by his teacher Banglazus, then he denies and begins his difficult journey in a narrative form that mixes ridicule and pleasure.