Keynotes of Optimism is a book written by Calvin Weiss Laufer and published in 1911. The book is a collection of essays that focus on the power of positive thinking and how it can lead to a more fulfilling and successful life. The essays cover a range of topics, including the importance of having a positive attitude, the benefits of perseverance, the role of faith in achieving success, and the power of visualization. Laufer draws on his own experiences...