not turn a profit, and Godwin was forced to borrow substantial sums to keep it going. He continued to borrow to pay off earlier loans, compounding his problems. By 1809, Godwin's business was close to failure, and he was "near to despair". Godwin was saved from debtor's prison by philosophical devotees such as Francis Place, who lent him further money. Though Mary Godwin received little formal education, her father tutored her in a broad range of subjects. He often took the children on educational outings, and they had access to his library and to the many intellectuals who visited him, including the Romantic poet Samuel Taylor Coleridge and the former vice-president of the United States Aaron Burr. Godwin admitted he was not educating the children according to Mary Wollstonecraft's philosophy as outlined in works such as A Vindication of the Rights of Woman (1792), but Mary Godwin nonetheless received an unusual and advanced education for a girl of the time. She had a governess, a daily tutor, and read many of her father's children's books on Roman and Greek history in manuscript. For six months in 1811, she also attended a boarding school in Ramsgate. Her father described her at age 15 as "singularly bold, somewhat imperious, and active of mind. Her desire of knowledge is great, and her perseverance in everything she undertakes almost invincible." In June 1812, Mary's father sent her to stay with the dissenting family of the radical William Baxter, near Dundee, Scotland. To Baxter, he wrote, "I am anxious that she should be brought up ... like a philosopher, even like a cynic." Scholars have speculated that she may have been sent away for her health, to remove her from the seamy side of the business, or to introduce her to radical politics. Mary Godwin revelled in the spacious surroundings of Baxter's house and in the companionship of his four daughters, and she returned north in the summer of 1813 for a further stay of 10 months. In the 1831 introduction to Frankenstein, she recalled: "I wrote then—but in a most common-place style. It was beneath the trees of the grounds belonging to our house, or on the bleak sides of the woodless mountains near, that my true compositions, the airy flights of my imagination, were born and fostered." Percy Bysshe Shelley Mary Godwin may have first met the radical poet-philosopher Percy Bysshe Shelley in