There is no department of inquiry in which it is not full as easy to miss truth as to find it, even when the materials from which truth is to be drawn are actually present to our senses. A child does not catch a gold fish in water at the first trial, however good his eyes may be, and however clear the water; knowledge and method are necessary to enable him to take what is actually before his eyes and under his hand. So it is with all who fish in a strange element for the truth which is living and moving there: the powers of observation must be trained, and habits of method in arranging the materials presented to the eye must be acquired before the student possesses the requisites for understanding what he contemplates. The observer of Men and Manners stands as much in need of intellectual preparation as any other student. This is not, indeed, generally supposed, and a multitude of travellers act as if it were not true. Of the large number of tourists who annually sail from our ports, there is probably not one who would dream of pretending to make observations on any subject of physical inquiry, of which he did not understand even the principles. If, on his return from the Mediterranean, the unprepared traveller was questioned about the geology of Corsica, or the public buildings of Palermo, he would reply, "Oh, I can tell you nothing about that--I never studied geology; I know nothing about architecture." But few, or none, make the same avowal about the morals and manners of a nation. Every man seems to imagine that he can understand men at a glance; he supposes that it is enough to be among them to know what they are doing; he thinks that eyes, ears, and memory are enough for morals, though they would not qualify him for botanical or statistical observation; he pronounces confidently upon the merits and social condition of the nations among whom he has travelled; no misgiving ever prompts him to say, "I can give you little general information about the people I have been seeing; I have not studied the principles of morals; I am no judge of national manners." There would be nothing to be ashamed of in such an avowal. No wise man blushes at being ignorant of any science which it has not suited his purposes to study, or which it has not been in his power to attain. No linguist wrings his hands when astronomical discoveries are talked of in his presence; no political economist covers his face when shown a shell or a plant which he cannot class; still less should the artist, the natural philosopher, the commercial traveller, or the classical scholar, be ashamed to own himself unacquainted with the science which, of all the sciences which have yet opened upon men, is, perhaps, the least cultivated, the least definite, the least ascertained in itself, and the most difficult in its application.