Robert Owen (; 14 May 1771 - 17 November 1858) was a Welsh textile manufacturer, philanthropic social reformer, and one of the founders of utopian socialism and the cooperative movement. Owen is best known for his efforts to improve the working conditions of his factory workers and his promotion of experimental socialistic communities.

Robert Owen was born in Newtown, a small market town in Montgomeryshire, Wales, on 14 May 1771, to Anne (Williams) and Robert Owen. His father was a saddler, ironmonger, and local postmaster; his mother was the daughter of a Newtown farming family. Young Robert was the sixth of the family's seven children, two of whom died at a young age. His surviving siblings were William, Anne, John, and Richard.  Owen received little formal education, but he was an avid reader. He left school at the age of ten and was apprenticed to a Stamford, Lincolnshire, draper for four years. He also worked in London draper shops as a teenager. Around the age of eighteen, Owen moved to Manchester, where he spent the next twelve years of his life. Initially, he was employed at Satterfield's Drapery in Saint Ann's Square.  While living in Manchester, Owen borrowed PS100 from his brother, William, to enter into a partnership to make spinning mules, a new invention for spinning cotton thread, but exchanged his share of the business within a few months for six spinning mules that he operated in a rented factory space. In 1792, when Owen was about twenty-one years old, mill-owner Peter Drinkwater made him manager of the Piccadilly Mill at Manchester; however, after two years of working for Drinkwater, Owen voluntarily gave up a contracted promise of partnership, left the company, and went into partnership with other entrepreneurs to establish and eventually manage the Chorlton Twist Mills in the Chorlton-on-Medlock area of Manchester.  By the early 1790s, Owen's entrepreneurial spirit, management skills, and progressive moral views were emerging. In 1793, he was elected as a member of the Manchester Literary and Philosophical Society, where the ideas of reformers and philosophers of the Enlightenment were discussed. He also became a committee member of the Manchester Board of Health, which was instigated, principally by Thomas Percival, to promote improvements in the health and working conditions of factory workers.

Using a quote from the above article, answer the following question: what was his greatest accomplishment?
he was an avid reader.