Abstract
The present paper has a negative aim and a positive aim, both limited in the present context to a sketch or outline. The negative aim, today less controversial, is to show that Aristotle’s theory of final causality has little or nothing to do with the teleology rejected by modern science and that, therefore, far from having been rendered obsolete, it has yet to be fully understood. This aim will be met through the identification and brief discussion of some key points on which Aristotle’s theory differs from teleology as still commonly understood. The positive aim is more controversial as it proposes that we take an ontology of life as the proper context for understanding the significance and nature of final causation in Aristotle. The argument for final causation, in other words, is that, without it, we would lose the phenomenon of life and, indeed, of nature altogether, reducing nature to the inanimate and mechanical.