Although published a hundred years ago, Fullerton's "Introduction to Philosophy" is still a great resource for a preliminary idea on philosophy. In the book, Fullerton explains what philosophy is, speaks of the nature of reflective or philosophic thinking, gives a general view of the main problems in the philosophy of his time, and gives an account of some of the most important doctrines in philosophy. Being logically structured and simply written, the book aims at the audience's first time meeting this subject.