In Wittenberg was published (1587), the _De Lampade Combinatoria Lulliana_, the second of the commentaries on Lully's art, and representing perhaps the _clavis magna_ of the _De Umbris_ and other Parisian publications. It was dedicated to the senatus of the University of Wittenberg. A reprint, however, appeared in Prague in the following year with a new frontispiece, a dedication to William of St. Clement, and the addition of a small treatise.[92] The chief purpose of the work was to furnish the reader with means for "the discovery of an indefinite number of propositions and middle terms for speaking and arguing. It is also the sole key to the intelligence of all Lullian works whatsoever," Bruno writes with his sublime confidence, "and no less to a great number of the mysteries of the Pythagoreans and Cabalists." As in the earlier work, so in this also, the root ideas are that thought is a complex of elements, which are to it as the letters of the alphabet are to a printed book; but thought and reality or nature are not opposed to one another--they are essentially one. The elements of thought when discovered will accordingly give us the constitutive elements of nature and the connections in, and workings of, nature will be understood from the different complications of these simple elements of thought. In the same year appeared the _De Progressu et Lampade Venatoriâ Logicorum_, "To enable one to dispute promptly and copiously on any subject proposed." It was dedicated to the Chancellor of the University of Wittenberg, and was mainly a commentary, without special references, on the _Topics_ of Aristotle, and doubtless formed part of the lectures on the _Organon_, given in Bruno's first year at Wittenberg. The simile of the hunt--_i.e._ the idea that the solution of a problem or the finding of a middle term is like a quarry that has to be stalked and hunted down--is a favourite one with Bruno. [Sidenote: 1588.] [Sidenote: _Oratio Valedictoria._] [Sidenote: Luther.]