The prominent Orientalist Theodor Nöldeke (1836 - 1930) focused on Old Testament research, Semitic languages, as well as Arabic, Persian, and Syrian literature. This work brings together a series of essays, some of which have been significantly revised, that the author published in various journals. He addresses topics such as 'On the Characteristics of the Semites', 'The Quran', 'Islam', 'Caliph Mansur', 'Syrian Saints', 'A Slave War in the East', and others. This is a reprint of the original edition from 1892.