In a previous chapter we have seen what a wide currency the legend of Alexander had both in east and west in the later Roman Empire and early middle ages, and how with Alexander was associated the magician and astrologer Nectanebus. We also saw that by about 800 A. D. at least a separate Letter of Alexander to Aristotle on the Marvels of India was current in the Latin west, and in the present chapter it is especially to the Pseudo-Aristotle and his connection with Alexander and India, rather than to the Pseudo-Callisthenes, that we turn. The tremendous historical importance of the career of Alexander the Great and of the writings of Aristotle impressed itself perhaps even unduly upon both the Arabian and the medieval mind. The personal connection between the two men--Aristotle was for a time Alexander’s tutor--was seized upon and magnified. Pliny in his _Natural History_ had stated that Alexander had empowered Aristotle to send two thousand men to different parts of the world to test by experience all things on the face of the earth.[755] This account of their scientific co-operation was enlarged upon by spurious writings associated with their names like the letter on the marvels of India.[756] With the introduction into western Europe in the twelfth and early thirteenth centuries of many genuine works of Aristotle unknown to the early middle ages, which had possessed only certain of his logical treatises, there also came into circulation a number of spurious writings ascribed to him. [Sidenote: Spurious writings ascribed to Aristotle.]