Greek philosopher and scientist, Aristotle, lived in the 4th century B.C. and is thought of as one of the most important figures from classical antiquity. Aristotle was probably the most famous member of Plato's Academy in Athens, whose writings would ultimately form the first comprehensive system of Western philosophy. His writings were not constrained to simply one field of inquiry but covered such various subjects as physics, biology, metaphysics,...

"All men by nature are actuated with the desire of knowledge," declared Aristotle. The philosopher's works are foundational to the history of science, and his treatise on metaphysics, or "first philosophy," is divided into sections on previous philosophical thought and theories; a refutation of skepticism; a demonstration of God's existence; an examination of the relation of metaphysics to the other sciences; an elucidation of the nature of the infinite;...

Written in 350 BC, Aristotle's "De Anima" or "On the Soul" is not a work on spirituality, as the title would suggest, but rather a work that could be described as one of biopsychology, or a work on the subject of psychology from a biological perspective. Aristotle's exposition centers on the soul. Aristotle's soul however is not the same as the common modern spiritual conception of something distinct from the body that lives on past death. Rather...

The Ethics of Aristotle is one half of a single treatise of which his Politics is the other half. Both deal with one and the same subject. This subject is what Aristotle calls in one place the 'philosophy of human affairs;' but more frequently Political or Social Science. In the two works taken together we have their author's whole theory of human conduct or practical activity, that is, of all human activity which is not directed merely to knowledge...

We have already discussed the first causes of nature, and all natural motion, also the stars ordered in the motion of the heavens, and the physical element-enumerating and specifying them and showing how they change into one another-and becoming and perishing in general. There remains for consideration a part of this inquiry which all our predecessors called meteorology. It is concerned with events that are natural, though their order is less perfect...

One of the fundamental works of Western political thought, Aristotle's masterwork is the first systematic treatise on the science of politics. Aristotle in Politics examines the various options for governance and their respective values. A detailed and pragmatic approach to the subject, Politics provides much of the foundation for modern political thought. One of his central ideas is that "Man is a political animal," meaning that people can only...

We must now treat of youth and old age and life and death. We must probably also at the same time state the causes of respiration as well, since in some cases living and the reverse depend on this.

The reasons for some animals being long-lived and others short-lived, and, in a word, causes of the length and brevity of life.

Our treatise proposes to find a line of inquiry whereby we shall be able to reason from opinions that are generally accepted about every problem propounded to us, and also shall ourselves, when standing up to an argument, avoid saying anything that will obstruct us. First, then, we must say what reasoning is, and what its varieties are, in order to grasp dialectical reasoning: for this is the object of our search in the treatise before us.

Greek philosopher and scientist, Aristotle, lived in the 4th century B.C. and is thought of as one of the most important figures from classical antiquity. Aristotle was probably the most famous member of Plato's Academy in Athens, whose writings would ultimately form the first comprehensive system of Western philosophy. His writings were not constrained to simply one field of inquiry but covered such various subjects as physics, biology, metaphysics,...