_The era of the questioner has arrived._ Soon mankind will refuse to accept anything simply because others believed it. Traditions and ancient thought, though weighed down with credentials of past ages or dead civilizations, will be cast aside. All problems will be weighed in the scales of the broader conception of justice which is daily growing in the mind of man. The twilight is passing, the dawn is upon us, and to-morrow will be indebted chiefly to these true brave men and women whom the superficial call pessimists, for the glorious heritage which will fall to humanity; for they are related to the manifold reforms which crowd upon the present, as were Copernicus and Galileo related to the science of astronomy, as Luther was to the Reformation, Jefferson to modern Democracy, as Wilberforce in England and Garrison in America to the overthrow of black slavery. They denounce the iniquity of the present hour; they unmask the carefully concealed evils which are undermining public morals; they demand a higher standard of life. If they aim to destroy the old wooden building, it is because they see around them not only the quarried stone, the mortar and iron beams, but a million hands waiting to erect upon the ruins of the old a nobler structure than humanity has yet beheld. Transcriber's Note: The page numbers in the Table of Contents have been converted to issues in the following way: Issue Pages June, 1891 1-128 July, 1891 129-256 August, 1891 257-384 September, 1891 385-512 October, 1891 513-640 November, 1891 641-768 Index to 4th Volume 769-771 Please note that the November issue's Contents are as printed, although the issue does have more articles than stated. Also, the illustrations are shown in the correct issue, but may be in a slightly different order than that listed.