What role did the final cause play in Aristotle’s explanations?

In Aristotelianism, the final cause—or telos—refers to the purpose, function, or goal toward which a process or entity is directed. Aristotle considered this concept essential for understanding the natural world, particularly regarding biological organisms.12

For Aristotle, final causality is central to his teleology, or doctrine of purposiveness. He observed that living beings develop from an imperfect state toward a more perfect, mature state. For example, one cannot fully explain the structure of a heart or an eye without accounting for the specific function that organ performs.342

This framework extends beyond biology into his ethics and political theory. Aristotle argued that all human activities are directed toward the ultimate end of a good and satisfactory life. While humans pursue many subordinate aims, these are only sensible when they serve this superior, overarching goal. Aristotle’s reliance on final causes was rooted in empirical observation rather than divine providence, forming a foundational element of his philosophical system.34