George Stuart Fullerton (1859 - 1925) was an American philosopher and psychologist. He was dean of the philosophy department at University of Pennsylvania. An Introduction to Philosophy was published in 1906 and reflects his realistic philosophy. This introduction to philosophy will cover the following. "1. To point out what the word "philosophy" is made to cover in our universities and colleges at the present day, and to show why it is given this meaning. 2. To explain the nature of reflective or philosophical thinking, and to show how it differs from common thought and from science 3. To give a general view of the main problems with which philosophers have felt called upon to deal. 4. To give an account of some of the more important types of philosophical doctrine which have arisen out of the consideration of such problems. 5. To indicate the relation of philosophy to the so-called philosophical sciences, and to the other sciences. 6. To show, finally, that the study of philosophy is of value to us all, and to give some practical admonitions on spirit and method. Had these admonitions been impressed upon me at a time when I was in especial need of guidance, I feel that they would have spared me no little anxiety and confusion of mind. For this reason, I recommend them to the attention of the reader."