The Mozi (), also called the Mojing () or the Mohist canon, is an ancient Chinese text from the Warring States period (476–221) that expounds the philosophy of Mohism. It propounds such Mohist ideas as impartiality, meritocratic governance, economic growth and aversion to ostentation, and is known for its plain and simple language. The chapters of the Mozi can be divided into several categories: a core group of 31 chapters, which contain the basic philosophic ideas of the Mohist school; several chapters on logic, which are among the most important early Chinese texts on logic and are traditionally known as the "Dialectical Chapters"; five sections containing stories and information about Mozi and his followers; and eleven chapters on technology and defensive warfare, on which the Mohists were expert and which are valuable sources of information on ancient Chinese military technology. There are also two other minor sections: an initial group of seven chapters that are clearly of a much later date, and two anti-Confucian chapters, only one of which has survived. The Mohist philosophical school died out in the 3rd century BC, and copies of the Mozi were not well preserved. The modern text has been described as "notoriously corrupt". Of the Mozi 71 original chapters, 18 have been lost and several others are badly fragmented. Mozi The Mozi, as well as the entire philosophical school of Mohism, is named for and traditionally ascribed to Mo Di, usually known as "Mozi" (Mandarin Chinese: 墨子, "Master Mo"). Mozi is a figure from the 5th century BC about whom nothing is reliably known. Most sources describe him as being from the State of Lu—though one says that he was from the State of Song—and say that he traveled around the various Warring States trying to persuade their rulers to stop attacking each other. Mozi seems to have come from a humble family, and some elements of the book suggest that he may have been some type of artisan or craftsman, such as a carpenter.