Once upon a time there was a little boy; a little boy unusually eager, and curious about the world he lived in. He was a nuisance to old gentlemen who wanted to read their newspaper; but young men liked to carry him on their shoulders and maul him about in romps, old ladies liked to make ginger cakes for him, and other boys liked to play “shinny” with him, and race on roller skates, and “hook” potatoes from the corner grocery and roast them in forbidden fires on vacant lots. The little boy lived in a crowded part of the city of New York, in what is called a “flat”; that is, a group of little boxes, enclosed in a large box called a “flat-house.” Every morning this little boy’s mother saw to his scrubbing, with special attention to his ears, both inside and back, and put a clean white collar on him, and packed his lunch-box with two sandwiches and a piece of cake and an apple, and started him off to school. The school was a vast building—or so it seemed to the little boy. It had stone staircases with iron railings, and big rooms with rows of little desks, blackboards, maps of strange countries, and pictures of George Washington and Abraham Lincoln and Aurora driving her chariot. Everywhere you went in this school you formed in line and marched; you talked in chorus, everybody saying the same thing as nearly at the same instant as could be contrived. The little boy found that a delightful arrangement, for he liked other boys, and the more of them there were, the better. He kept step happily, and sat with glee in the assembly room, and clapped when the others clapped, and laughed when they laughed, and joined with them in shouting: Oh, Columbia, the Gem of the Ocean, The—ee home of the Bra—ave and the Free—ee! The rest of the day the little boy sat in a crowded classroom, learning things. The first thing he learned was that you must be quiet—otherwise the teacher, passing down the aisle, would crack your knuckles with a ruler. Another thing was that you must raise your hand if you wanted to speak. Maybe these things were necessary, but the little boy did not learn why they were necessary; in school all you learned was that things were so. For example, if you wanted to divide one fraction by another, you turned the second fraction upside down; it seemed an odd procedure, but if you asked the reason for it, the teacher would be apt to answer in a way that caused the other little boys to laugh at you—something which is very painful.