Page:The Science of History and the Hope of Mankind.djvu/24



knowledge about man can be complete until and unless it is based on a study of all human passions and tendencies, institutions and activities. And so history must necessarily be incomplete and quite unable to guess the future destiny of mankind or to suggest the lines of advance suitable to any stage, so long as it does not concern itself with the whole of human life and its thousand and one manifestations. The historian, therefore, will have to use at every step the laws of life and living organisms. Biology is thus the true basis of Sociology and the science of History. Founded on the science of Life, History will be competent to formulate clear and definite principles about the course of human progress, the development of society and the evolution of civilisation.