Aristotle, one of the greatest philosophers of all time, made significant contributions to several fields including metaphysics. In this article, we will explore Aristotle’s understanding of the nature of metaphysics.

What is Metaphysics?

Metaphysics is a branch of philosophy that deals with the fundamental nature of reality, existence and the relationship between mind and matter. Metaphysical questions go beyond the physical realm and cannot be answered through empirical methods. Rather, they require a deep understanding of abstract concepts and logic.

Aristotle’s Metaphysical Theory

Aristotle believed that metaphysics was the study of being qua being – that is, being in and of itself. He argued that everything in existence can be classified into two categories: substance and accident.

Substance refers to the underlying essence or nature of something. It is what makes an object what it is. For example, the substance of a human being is their soul or mind.

Accidents, on the other hand, are properties or characteristics that are not essential to an object’s identity but can still be used to describe it. For example, a human being may have black hair or blue eyes – these are accidents.

Aristotle also believed in the principle of non-contradiction – that something cannot both be and not be at the same time and in the same respect. This principle forms one of the cornerstones of his metaphysical theory.

Form and Matter

Another important aspect of Aristotle’s metaphysical theory was his concept of form and matter. According to Aristotle, everything in existence has both form and matter.

Form refers to an object’s shape or structure while matter refers to its material composition. For example, a sculpture may have a certain shape (form) but it is made up of marble (matter).

Aristotle believed that form was more important than matter because it was what gave objects their identity and essence. In other words, the form of an object determines what it is, while matter is just the material that makes up that object.

Cause and Effect

Finally, Aristotle’s metaphysical theory also included the concept of cause and effect. He believed that everything in existence had a cause or a reason for being.

There were four types of causes according to Aristotle – material, efficient, formal, and final. Material cause refers to the physical material that an object is made up of.

Efficient cause refers to the force or agent that brought about the object’s existence. Formal cause refers to an object’s form or structure while final cause refers to its purpose or end goal.


In conclusion, Aristotle’s metaphysical theory was based on the study of being qua being and focused on concepts such as substance and accident, form and matter, and cause and effect. His ideas have had a significant impact on philosophy and continue to influence our understanding of reality today.