Aristotle made this statement in his 'Politics' to emphasize the teleological nature of the state. He argued that the state is the natural end goal of human social development. Just as a hand cannot function without the body, an individual cannot fully realize their potential or achieve virtue outside of the political community of the state.

Aristotle categorized constitutions based on whether they served the common good or the private interest of the rulers. He identified Monarchy, Aristocracy, and Polity as the 'correct' forms of government because they aim at the general welfare. Conversely, Tyranny, Oligarchy, and Democracy (in his specific usage) were considered 'deviant' or 'perverted' forms because they prioritize the interests of the ruling faction over the collective good of the state.

Aristotle distinguishes between different types of causes. In his scientific writings, he argues that the 'final cause' of rain is not necessarily the benefit to plants, but the cooling of rising vapors. While he acknowledges the utility of rain, he identifies the physical process of cooling as the specific teleological explanation for why rain occurs in the natural world.

Aristotle argued that the state is the final stage in the evolution of human social organization, growing naturally from the family to the village, and finally to the polis. He viewed the family as the basic building block of society, where the relationships and authority structures within the household serve as the foundational model for the larger political community.

Aristotle arrived in Athens in 367 BC to join Plato's Academy. He remained a student and associate of Plato for approximately twenty years until Plato's death in 347 BC. This period was crucial for the development of Aristotle's philosophical framework, which eventually diverged from Plato's idealism toward a more empirical and systematic study of politics and ethics.

Aristotle argues in his 'Politics' that political rule is exercised over free and equal citizens, whereas the rule of a master over a slave is despotic and based on the master's benefit. The constitutional ruler governs through laws and the consent of the governed, reflecting the capacity of citizens for rational self-rule, which is fundamentally different from the master-slave relationship based on natural hierarchy.

Aristotle's 'Categories' and 'On Interpretation' are foundational texts in his logical works. 'Categories' deals with the classification of terms and concepts, while 'On Interpretation' focuses on propositions and the nature of truth and falsity. Together, they provide the essential framework for Aristotelian logic, establishing the rules of reasoning and language that influenced centuries of philosophical and scientific inquiry.

Aristotle's work covers a vast range of subjects including logic, ethics, politics, and biology. While he discussed the soul in 'De Anima', the concept of an 'immortal soul' as a distinct category of inquiry is more characteristic of Platonic or later theological thought rather than Aristotle's empirical and naturalistic categorization of philosophical subjects.

Aristotle viewed the polis as the highest form of human association where individuals could achieve their full potential. He did not distinguish between the state and civil society as modern theorists do; for him, the state was the community of citizens. Thus, the idea of a formal separation between state and civil society is a modern concept alien to Aristotelian political thought.

Aristotle famously argued that 'man is by nature a political animal' and that the state exists prior to the individual in terms of functional importance. He believed that the individual can only achieve their full potential and moral excellence within the context of the state. Thus, individual rights and identity are inextricably linked to, and defined by, one's role as a citizen within the political community.