But, great as it may be, those who will make it must derive their summary of facts or bases of observation from the past, and therefore I urge the importance of every man who can write doing what he can to collect all that illustrates Humanity as it is and as it was in by-gone ages. It hath not entered into the heart of man to conceive what a Folk-lore or ethnological society in ancient Greece, Rome, or Egypt might not have collected and preserved for the delight of every civilized human being of the present day. It is very true that the number of persons, as yet, who understand this--still less of those who take a real interest in it--is extremely limited, and they do not extend in England, America, or any other country, to more than a few hundreds. To the vast multitude, even of learned men, Folk-lore is only a "craze" for small literary bric-à-brac, a "fancy" which will have its run, and nothing more. To its earnest devotees it is the last great development of the art of learning and writing history, and a timely provision for future social science. It sets forth the most intimate inner life of people as they were, and the origins of our life as it is. In Folk-lore, Philology, Ethnology, and the study of Mythology or Religion find their greatest aid. The amount of Red Indian Folk-lore which has been suffered to perish in the United States without exciting the least interest is beyond all belief. Thoreau could find in the Algonkin legends of New England nothing but matter for feeble-minded ridicule. But there are men coming, or a generation rising, to whom every record of the past will be of value, for they are beginning to perceive that while the collector is doing work of value the mere theorist, who generally undervalues if he does not actually oppose the collector, will with his rubbish be swept away "down the back-entry of time," to be utterly forgotten.