our conception as objects. Conception (Vorstellung) has the quality of believing in the existence of objects. This comes from the fact that the quality of thinking consists in attributing an objectivity to impressions, a substance, and a projecting of them into space". The next day (3 May 1896) he added, "I am reading Spir all the time, and the reading provokes a mass of thoughts". The most important works on Spir's philosophy were published between 1900 and 1914 (Lessing, Zacharoff, Segond, Huan, Martinetti). In a lecture given in 1917, Rudolf Steiner called Spir "extraordinarily fascinating" and an "original thinker", and someone possessed of a "subtlety" not found in his 19th century contemporaries. As a consequence, Spir was unfortunately not understood and "suffered all the distress that a thinker can experience from being entirely ignored; killed by silence as the saying goes". After the First World War, the interpretation of Spir's thought by the Italian philosopher Piero Martinetti (1872–1943) gave it a second life for a short while, in the form of a "religious idealism". Before the Second World War, Hélène Claparède-Spir published some new editions of her father's books in French and had an extensive exchange of letters to promote her father's thought. In 1937, for the centennial of Spir's birth, Martinetti published in Italy a monographic edition on Spir of the Rivista di Filosofia (Philosophical Review). After the Second World War, African Spir fell into oblivion. In 1990, for the centennial of Spir's death in Geneva, the Geneva Public Library organized an exhibition of African Spir's corpus and published the analytical catalogue. Many of Spir's books have not been entirely sold and are still available in their first or second edition (in German, French, Italian, English, or Spanish translations). Presumably, due to the increasing interest in the argument at the beginning of the twenty-first century, a reprint of the Italian translation by Odoardo Campa in 1911 of Spir's Moralität und Religion (1874) has been published in 2008. Works 1866. Die Wahrheit, Leipzig, J.G. Findel (under the pseudonym of "Prais", anagram of: A. Spir, 2nd ed. under the name of A. Spir 1867, Leipzig, Förster und Findel). 1868. Andeutung zu einem widerspruchlosen Denken, Leipzig, J.G. Findel. 1869. Erörterung einer philosophischen Grundeinsicht, Leipzig, J.G. Findel. 1869. Forschung nach der Gewissheit in der Erkenntniss der Wirklichkeit, Leipzig, J.G. Findel. 1869. Kurze Darstellung der Grundzüge einer philosophischen Anschauungsweise, Leipzig, J.G. Findel. 1869. Vorschlag