"The subject of the cathedrals, their architecture and decoration is, in fact, practicably inexhaustible. . . . Priests and laymen worked with masons, painters, and sculptors, and all were bent on producing the best possible building, and improving every part and every detail, till the amount of thought and contrivance accumulated in any single structure is almost incomprehensible. If any one man were to devote a lifetime to the study of one of our great cathedrals--assuming it to be complete in all its medieval arrangements--it is questionable whether he would master all its details, and fathom all the reasonings and experiments which led to the glorious result before him. And when we consider that not in the great cities alone, but in every convent and in every parish, thoughtful professional men were trying to excel what had been done and was doing, by their predecessors and their fellows, we shall {98} understand what an amount of thought is built into the walls of our churches, castles, colleges, and dwelling houses. If any one thinks he can master and reproduce all this, he can hardly fail to be mistaken. My own impression is that not one tenth part of it has been reproduced in all the works written on the subject up to this day, and much of it is probably lost and never again to be recovered for the instruction and delight of future ages." This profound significance and charming quality of the cathedrals is usually unrecognized by those who see them only once or twice, and who, though they are very much interested in them for the moment, have no idea of the wealth of artistic suggestion and of thoughtful design so solicitously yet happily put into them by their builders. People who have seen them many times, however, who have lived in close touch with them, who have been away from them for a time and have come back to them, find the wondrous charm that is in these buildings. Architects and workmen put their very souls into them and they will always be of interest. It is for this reason, that the casual visitor at all times and in all moods finds them ever a source of constantly renewed pleasure, no matter how many times they may be seen. Elizabeth Robbins Pennell has expressed this power of Cathedrals to please at all times, even after they have been often seen and are very well known, in a recent number of the _Century_, in describing the great Cathedral of Notre Dame, "Often as I have seen Notre Dame," she says, "the marvel of it never grows less. I go to Paris with no thought of time for it, busy about many other things and then on my way over one of the bridges across the river perhaps, I see it again on its island, the beautiful towers high above the houses and palaces and the view now so familiar strikes me afresh with all the wonder of my first impression."