"Mental Philosophy: Including the Intellect, Sensibilities, and Will" by Joseph Haven is a scientific publication written in the late 19th century. The work explores the complexities of mental processes, covering various aspects of psychology, including intellect, emotions, and willpower. It aims to provide a comprehensive understanding of mental philosophy in a manner that is both scientific and accessible, filling gaps perceived by the author in existing literature at the time. The opening portion of the book lays the groundwork for a detailed examination of mental philosophy, addressing the need for a comprehensive text better suited for college students. Haven discusses his motivations for writing the work, highlighting the inadequacies he found in the textbooks available at the time, which often overlooked key areas such as emotional response and volition. He introduces the importance of mental science as a field worthy of study and asserts that understanding the workings of the mind is crucial not just academically, but also for personal growth and the cultivation of effective thought processes in various contexts. (This is an automatically generated summary.)