In his lectures his delivery was very good; he knew how to make immediate apposite replies. Nevertheless, his language was not correct. For instance, he used to say "anamnemisketai" for "anamimnesketai"; and he made similar blunders in writing. But when he would speak, his intelligence seemed to shine in his face, and to illuminate it with its rays. He grew especially handsome in discussions; a light dew of perspiration appeared on his forehead, gentleness radiated in his countenance, he answered kindly, but satisfactorily. For three days I had to question him, to learn from him his opinions about the union of the body with the soul; he spent all that time in explaining to me what I wanted to know.[8] A certain Thaumasius, who had entered into the school, said that he wanted to take down the arguments of the discussion in writing, and hear Plotinos himself speak; but that he would not stand Porphyry's answering and questioning. "Nevertheless," answered Plotinos, "if Porphyry does not, by his questions, bring up the difficulties that we should solve (notice, in the course of the Enneads, the continual objections), we would have nothing to write." XIV. PHILOSOPHICAL RELATIONS OF PLOTINOS. The style of Plotinos is vigorous and substantial, containing more thoughts than words, and is often full of enthusiasm and emotion. He follows his own inspirations rather than ideas transmitted by tradition. The teachings of the Stoics and Peripatetics are secretly mingled among his works; the whole of Aristotle's Metaphysics is therein condensed. Plotinos was fully up to the times in geometry, arithmetic, mechanics, optics and music, although he did not take an over-weening interest in these sciences. At his lectures were read the Commentaries of Severus, of Cronius;[9] of Numenius,[10] of Gaius and Atticus (Platonic Philosophers, the latter, setting forth the differences between Plato and Aristotle);[11] there were also readings of the works of the Peripatetics, of Aspasius, of Alexander (of Aphrodisia, whose theory of Mixture in the Universe Plotinos studies several times), of Adrastus, and other philosophers of the day. None of them, however, was exclusively admired by Plotinos. In his speculations he revealed an original and independent disposition. In all his researches he displayed the spirit of Ammonius. He could readily assimilate (what he read); then, in a few words, he summarized the ideas aroused in him by profound meditation thereon. One day Longinus's book "On the Principles," and his "On Antiquarians" were read. Plotinos said, "Longinus is a literary man, but not a philosopher." Origen (the Pagan[12]) once came among his audience; Plotinos blushed, and started to rise. Origen, however, besought him to continue. Plotinos, however, answered that it was only natural for lecturers to cease talking when they were aware of the presence, in the audience, of people who already knew what was to be said. Then, after having spoken a little longer, he