“Now it is true that I could have learned without a teacher, but it would have been risky for me, because of my natural clumsiness. The self-taught man seldom knows anything accurately, and he does not know a tenth as much as he could have known if he had worked under teachers; and, besides, he brags, and is the means of fooling other thoughtless people into going and doing as he himself had done. There are those who imagine that the unlucky accidents of life - life's "experiences" - are in some way useful to us. I wish I could find out how. I never knew one of them to happen twice. They always change off and swap around and catch you on your inexperienced side. If personal experience can be worth anything as an education, it wouldn't seem likely that you could trip Methuselah; and yet if that old person could come back here it is more than likely that one of the first things he would do would be to take hold of one of these electric wires and tie himself all up in a knot. Now the surer thing and the wiser thing would be for him to ask somebody whether it was a good thing to take hold of. But that would not suit him; he would be one of the self-taught kind that go by experience; he would want to examine for himself. And he would find, for his instruction, that the coiled patriarch shuns the electric wire; and it would be useful to him, too, and would leave his education in quite a complete and rounded-out condition, till he should come again, some day, and go to bouncing a dynamite-can around to find out what was in it.”