The Nicomachean Ethics is a philosophical work by Aristotle, written in the 4th century BC. It is one of the most influential works of philosophy in Western thought, and is considered to be the foundation of ethical thought. The work covers topics such as the nature of happiness, the
From Wikipedia
The Nicomachean Ethics is Aristotle's best-known work on ethics: the science of the good for human life, that which is the goal or end at which all our actions aim. It consists of ten sections, referred to as books, and is closely related to Aristotle's Eudemian Ethics. The work is essential for the interpretation of Aristotelian ethics.