Kindly consider what a science is. A science is nothing more than the organized solution of a number of related problems. These problems and their answers have been changed and added to the ages through. But when the science first started there was no literature on it. It originated from the attempts of men to solve those problems which spontaneously occurred to them. Before they started thinking these men knew nothing of the science. The men who came after them availed themselves of the thoughts of those before, and added to these. The whole process has been one of thought added to thought. Yet, in spite of this, people still cling to the belief, even if they do not openly avow it, that we never can make any headway by thinking, but that in order to be educated, or cultured, or to have any knowledge, we must be reading, reading, reading.[17] I almost blush for this elaborate defense. Everybody will admit the necessity for thinking—in the abstract. But how do we regard it in the concrete? When we see a man reading a good book, we think of him as educating himself. When we perceive a man without a book, even though we may happen to know that he is engaged in reflection, we do not look upon him as educating himself, though we may regard him as intelligent. In short, our habitual idea of thought is that it is a process of reviewing what we already know, but not of adding anything to our knowledge. Of course no one would openly avow this opinion, but it is the common acting belief none the less. The objections to thought are inarticulate and half-conscious. I am trying to make them articulate in order to answer them.