In earlier centuries the labour question was settled by means of the legal subjection of certain classes of men, until complete injustice was reached in slavery. The system was rendered still more efficient by making slave-ownership hereditary. Slavery, originated in wars and man-hunting, in times when there were but few domesticated animals and no machines, when utensils, were very imperfect and a more or less developed mode of life could only be conducted by means of the manual labour of individuals. Therefore, in order to obtain labourers, men resorted to force, introducing a slave population of which the individuals were either divided among households or kept in special slave habitations. The industry of the slave was often increased by the promise of definite privileges or private possessions. He was often granted a home and family life, and thus he became a bondman--burdened and taxed and bound to the soil, it is true, but otherwise looked upon as a man possessed of ordinary rights and privileges. Even during the days of slavery there were instances of emancipation, and the possibility was opened up of rising to the social position of a slave-owner. The evolution of a free working class, with recompense for labour, is one of the most important chapters in the history of modern civilisation. The chief sphere of development is that of the crafts and trades. The power of guilds often induces legislation in their favour; thus they become monopolies, and only such individuals as are members of an association may adopt its particular trade or craft as a profession. Sometimes the unity of a guild is broken, and the individual right to form judgments enters in place of the rules laid down by the corporation. From this results competition, which finally leads up to free competition. Through free competition, the encumbering rigidity of the guilds is avoided; it leads to a high development of the individual, and is therefore a great source of progress; it discloses the secrets of the craft, freeing men from deeply-rooted prejudices in regard to different vocations; and it increases man’s inventive capacity, producing new methods for carrying on trades and new combinations and connections. [Illustration: THE PROMISE OF PEACE: THE HAGUE CONFERENCE OF THE NATIONS OF THE WORLD IN 1907 Nothing could more effectively illustrate the ideal of international peaceful co-operation to which hopeful historians look forward than this photograph of the representatives of all the leading Powers of the world, met together at The Hague, in the year 1907, to promote the amity of nations and the eventual abolition of war. ] [Illustration: STEPS IN MAN’S DEVELOPMENT II Professor JOSEPH KOHLER] THE HIGHER PROGRESS OF MANKIND