While it is generally supposed that there are many new features in modern education, it requires but slight familiarity with educational history to know that there is very little that is novel. Such supposedly new phases as nature-study and technical training and science, physical as well as ethical, are all old stories, though they have had negative phases during which it would be hard to to trace them. The more we know about the history of education the greater is our respect for educators at all times. Nearly always they had a perfectly clear idea of what they were trying to do, they faced the problems of education in quite the same spirit that we do and often solved them very well. Indeed the results of many periods of old-time education are much better than our own, even when judged by our standards. Unfortunately there exists a very common persuasion that evolution plays a large role in education and that we, "the heirs of all the ages in the foremost files of time," are necessarily in the forefront of educational advance. There has been much progress in education in the last century, but it would, indeed, be a hopeless world if there had not been progress out of the depths in which education was plunged in the eighteenth century. There were a number of reformers in education at the end of the eighteenth and the beginning of the nineteenth century. It was rather easy to be an educational reformer at that time. The lowest period in the history of {vii} education was about the middle of the eighteenth century. It has been assumed that since we are far ahead of that generation we must be still farther ahead of the people who preceded them. That is the mistake. There are periods of education of very great significance centuries long before that time. In educational lectures and addresses for the past five years, I have been trying to translate into modern terms the meaning of these old periods of education. A great many teachers have thought the ideas valuable and suggestive and so I am tempted to publish them in book form. There is an additional reason, that of wishing to create a bond of sympathy between the two systems of education that have grown up in this country. For some three generations now Catholic educators have been independently building up a system of education from the elementary schools to the university. The American world of education is coming to recognize how much they have accomplished. There has even been some curiosity expressed as to how it was all done in spite of apparently insuperable obstacles. One phase of Catholic education, its thorough-going conservatism and definite effort to value the past properly and take advantage of its precious lessons, is here represented.