A confusion common to all who do not think, and avoided only with the greatest difficulty by those who do, is that between their own knowledge and the knowledge possessed by another person who has different tastes, different receptive powers, and other opportunities. They cannot imagine that the world does not appear the same to him that it appears to them. They do not really believe that he can feel quite differently from themselves and still be in every respect as sound in mind and as intelligent as they are. The incapacity to imagine a different mental condition is strikingly manifested in what we call the Philistine mind, and is one of its strongest characteristics. The true Philistine thinks that every form of culture which opens out a world that is closed against himself leaves the votary exactly where he was before. "I cannot imagine why you live in Italy," said a Philistine to an acquaintance; "nothing could induce _me_ to live in Italy." He did not take into account the difference of gifts and culture, but supposed the person he addressed to have just his own mental condition, the only one that he was able to conceive, whereas, in fact, that person was so endowed and so educated as to enjoy Italy in the supreme degree. He spoke the purest Italian with perfect ease; he had a considerable knowledge of Italian literature and antiquities; his love of natural beauty amounted to an insatiable passion; and from his youth he had delighted in architecture and painting. Of these gifts, tastes, and acquirements the Philistine was simply destitute. For him Italy could have had no meaning. Where the other found unfailing interest he would have suffered from unrelieved _ennui_, and would have been continually looking back, with the intolerable longing of nostalgia, to the occupations of his English home. In the same spirit a French _bourgeois_ once complained in my hearing that too much space was given to foreign affairs in the newspapers, "car, vous comprenez, cela n'intéresse pas." This was simply an attribution of his personal apathy to everybody else. Certainly, as a nation, the French take less interest in foreign affairs than we do, but they do take some interest, and the degree of it is exactly reflected by the importance given to foreign affairs in their journals, always greatest in the best of them. An Englishman said, also in my hearing, that to have a library was a mistake, as a library was of no use; he admitted that a few books might be useful if the owner read them through. Here, again, is the attribution of one person's experience to all cases. This man had never himself felt the need of a library, and did not know how to use one. He could not realize the fact that a few books only allow you to read, whilst a library allows you to pursue a study. He could not at all imagine what the word "library" means to a scholar,--that it means the not being stopped at every turn for want of light, the not being