From that time Abelard could visit Heloise without restraint. He was her teacher, and the two spent hours together, nominally in the study of Greek and Hebrew; but doubtless very little was said between them upon such unattractive subjects. On the contrary, with all his wide experience of life, his eloquence, his perfect manners, and his fascination, Abelard put forth his power to captivate the senses of a girl still in her teens and quite ignorant of the world. As Remusat says, he employed to win her the genius which had overwhelmed all the great centers of learning in the Western world. It was then that the pleasures of knowledge, the joys of thought, the emotions of eloquence, were all called into play to charm and move and plunge into a profound and strange intoxication this noble and tender heart which had never known either love or sorrow. ... One can imagine that everything helped on the inevitable end. Their studies gave them opportunities to see each other freely, and also permitted them to be alone together. Then their books lay open between them; but either long periods of silence stilled their reading, or else words of deepening intimacy made them forget their studies altogether. The eyes of the two lovers turned from the book to mingle their glances, and then to turn away in a confusion that was conscious. Hand would touch hand, apparently by accident; and when conversation ceased, Abelard would often hear the long, quivering sigh which showed the strange, half-frightened, and yet exquisite joy which Heloise experienced. It was not long before the girl's heart had been wholly won. Transported by her emotion, she met the caresses of her lover with those as unrestrained as his. Her very innocence deprived her of the protection which older women would have had. All was given freely, and even wildly, by Heloise; and all was taken by Abelard, who afterward himself declared: "The pleasure of teaching her to love surpassed the delightful fragrance of all the perfumes in the world." Yet these two could not always live in a paradise which was entirely their own. The world of Paris took notice of their close association. Some poems written to Heloise by Abelard, as if in letters of fire, were found and shown to Fulbert, who, until this time, had suspected nothing. Angrily he ordered Abelard to leave his house. He forbade his niece to see her lover any more. But the two could not be separated; and, indeed, there was good reason why they should still cling together. Secretly Heloise left her uncle's house and fled through the narrow lanes of Paris to the dwelling of Abelard's sister, Denyse, where Abelard himself was living. There, presently, the young girl gave birth to a son, who was named Astrolabe, after an instrument used by astronomers, since both the father and the mother felt that the offspring of so great a love should have no ordinary name.