'The condition of the working-class is the real basis and point of departure of all social movements of the present because it is the highest and most unconcealed pinnacle of the social misery existing in our day. French and German working-class Communism are its direct, Fourierism and English Socialism, as well as the Communism of the German educated bourgeoisie, are its indirect products. A knowledge of proletarian conditions is absolutely necessary to be able to provide solid ground for socialist theories, on the one hand, and for judgments about their right to exist, on the other; and to put an end to all sentimental dreams and fancies pro and con. But proletarian conditions exist in their classical form, in their perfection, only in the British Empire, particularly in England proper. Besides, only in England has the necessary material been so completely collected and put on record by official enquiries as is essential for any in the least exhaustive presentation of the subject.'