Several sources out of which to draw information and seek guidance as toIbn Sînâ’s biography and writings, and his systems of medicine and philosophy, are nowadays easily accessible to nearly every one. Among such sources the following are the best for Egyptian students:Ibn Abi Uçaybi´ah’s “Tabaqât-ul-Atib-ba,” and Wuestenfeld’s “Arabische Aertzte.”Ibn Khallikân’s “Wafâyât-ul-A´ayân.”Brockelmann’s “Arabische Literatur.”F. Mehren’s Series of Essays on Ibn Sînâ in the Periodical “Muséon” from the year 1882 and on.Clément Huart’s Arabic Literature, either in the French Original or in the English Translation.Carra de Vaux’s “Les Grands Philosophes: Avicenna,” Paris, Felix Alcan, 1900, pp. vii et 302.T. de Boer’s “History of Philosophy in Islâm,” both in Dutch and in the English translation.The “Offering to the Prince in the Form of a Compendium on the Soul,” of which the present Pamphlet is my attempt at an English Translation, is the least known throughout Egypt and Syria of all Ibn Sînâ’s many and able literary works: indeed I have failed, after repeated and prolonged enquiry, to come across so much as one, among my many Egyptian acquaintances, that had even heard of it.Doctor Samuel Landauer of the University of Strassburg published both the Arabic text, and his own concise German translation, of this Research into the Faculties of the Soul, in volume 29 for the year 1875 of the Z.d.D.M.G., together with his critical notes and exhaustively erudite confrontations of the original Arabic with many Greek passages from Plato, Aristotle, Alexander Aphrodisias, and others, that Ibn Sînâ had access to, it would appear, second hand, i.e. through translations. Doctor Landauer made use also of a very rare Latin translation by Andreas Alpagus, printed at Venice in 1546; and of the Cassel second edition of Jehuda Hallévy’s religious Dialogue entitled Khusari, which is in rabbinical Hebrew…