A great revival has just begun in Brooklyn. It has already reached New York, and is beginning to arouse interest in Philadelphia, Boston, and Baltimore. Crowds of men and women of all classes, especially the poorest and least cultivated, gather noon and night to religious services of a simple but most fervent character. Old men say they have known nothing like it since the days of 1857, or the Moody and Sankey meetings of 1874-76. By cable we learn that something of the same wave of religious movement has appeared in London, Berlin, and Paris. We ask, what are we to think of it? Is there a spiritual atmosphere, with its heights and depths, mysteriously swayed from land to land? We can only wait and see. _December 31st, 1931._ I have been reading over the pages of this diary for the year just coming to a close. This has led me to some retrospection, looking yet farther back, and comparing the present with the last century. The 19th century was proud of itself; and we of the 20th have hardly gained all that we should in true humility. Both centuries have had their great events and great advances; and both, their weaknesses, errors, and absurdities. I will venture a comparison of some of these. The _most absurd_ things of the 19th century, I think, were these: the decree at Rome of the infallibility of the Pope; England's bolstering up the Turkish Empire for fear of Russia attacking India; Lord Beaconsfield's administration altogether; the financial policy of the American green-back party; the belief in spirit-rapping, in the first principles of Herbert Spencer's philosophy, and in the sufficiency of Darwin's theory of natural selection to account for the ascent from lower to higher species; the shot-gun quarantine in the South against yellow fever; the toleration of the waltz, in _otherwise civilized_ society, when even Lord Byron denounced it; and the unreformed spelling of the English language. As the greatest national _crimes_ of the last century, I would name the British government forcing by war the trade in Opium upon China, and the long-continued bad faith of the United States government towards the Indian tribes of the West. Perhaps the greatest _wonders_ of the 19th century were the invention of photography, solar spectral analysis, the radiometer, the phonograph, the photophone; in public affairs, the reunion of the old and new school Presbyterian Churches, and the disappearance, by civil war, of negro slavery in the United States.