Aristotle

Aristotle was an ancient Greek philosopher and polymath. He wrote about many subjects, including the natural sciences, philosophy, linguistics, economics, politics, psychology, and the arts. Aristotle started the Peripatetic school of philosophy in the Lyceum in Athens.

Aristotle was born in Stagira in northern Greece. His father, Nicomachus, passed away when Aristotle was young, and a guardian raised him. At about eighteen years old, he joined Plato's Academy in Athens. After Plato died, Aristotle left Athens. He was asked by Philip II of Macedon to teach his son, Alexander the Great. Aristotle also created a library in the Lyceum, where he wrote many books.

Even though Aristotle wrote many works, only about a third of his original output has survived. His ideas had a big effect on the world. People still talk about his teachings today. His studies of logic and ethics continue to be important.

Life

Aristotle was born in 384 BC in Stagira, a town near modern-day Thessaloniki. His father was a doctor, which may have sparked his early interest in science and nature. When he was young, both of his parents passed away, and he was raised by a guardian.

At around age eighteen, Aristotle moved to Athens to study at Plato's Academy. He stayed there for nearly twenty years, learning and teaching. After Plato’s death, Aristotle left Athens and went to Assos in Asia Minor, where he did research in plants and sea life with a friend named Theophrastus.

Later, Aristotle was asked to teach Alexander, who would become a famous leader. He taught Alexander many subjects for a few years. After Alexander’s father died, Aristotle returned to Athens and started his own school called the Lyceum. There, he taught and wrote many important works on many subjects, including science, ethics, and politics.

Aristotle spent many years in Athens writing and teaching. After Alexander died, some people in Athens became unhappy with Aristotle, and he chose to leave the city. He passed away in Chalcis in the same year, 322 BC.

Theoretical philosophy

Logic

Main article: Term logic

Further information: Non-Aristotelian logic

Aristotle began the first careful study of logic. His ideas about logic were important in Europe for many years. Even a famous thinker named Kant said that Aristotle did a lot of work on logic.

Organon

Main article: Organon

Many of Aristotle's writings might not be exactly as he wrote them, because his students may have changed them later. His logic books were collected into a group called the Organon around 40 BC. The books are:

1. Categories
2. On Interpretation
3. Prior Analytics
4. Posterior Analytics
5. Topics
6. On Sophistical Refutations

These books start with simple ideas and build up to more complex ones, showing how to reason correctly.

Syllogism

Aristotle studied different ways to argue logically. He called this "analytics," not "logic."

Demonstration

Aristotle talked about how we know things for sure. He believed that true knowledge comes from understanding why things are the way they are.

Metaphysics

Main article: Metaphysics (Aristotle)

The word "metaphysics" comes from a collection of Aristotle’s works, but he called it "first philosophy" or theology. He wanted to study what stays the same and never changes, instead of things in nature.

Substance

Further information: Hylomorphism

Aristotle looked at what makes something what it is. He thought that everything is made of two parts: matter (what it’s made of) and form (what it looks like). For example, a house is made of bricks and wood (matter), but it becomes a house when it has the form of shelter.

Moderate realism

Aristotle believed that ideas like “apple-ness” exist, but only when they are found in real apples. Unlike his teacher Plato, Aristotle thought these ideas were not separate from the things they describe.

Potentiality and actuality

Aristotle wrote about change and how things can become different. He used the words “potentiality” (what something can become) and “actuality” (what it is now). For example, a seed has the potential to become a plant, and when it does, that’s its actuality. Aristotle said that actuality is more important than potentiality.

Natural philosophy

Aristotle studied many parts of nature, from physics to biology. He thought about how things move, what the world is made of, and how living things grow and change. His ideas were some of the first to explain these things in an organized way.

Physics

Aristotle thought about what the world is made of using ideas like earth, water, air, and fire. He also believed there was a special substance called aether that made up the stars and planets. He described two kinds of motion: natural motion, like a stone falling, and violent motion, like throwing a ball. He also talked about how objects move and change, and why things happen the way they do.

Astronomy

In astronomy, Aristotle talked about the stars and the Milky Way. He explained why the Earth doesn’t block all the stars from view.

Geology and natural sciences

Aristotle was one of the first to write about changes in the Earth, like rivers changing over time and islands appearing after volcanic eruptions.

Biology

Aristotle studied animals closely, looking at their bodies and how they live. He described many sea creatures and land animals, noticing how their bodies suit their ways of living. He grouped animals into different categories based on their features.

Psychology

Aristotle thought about the mind and soul. He believed that all living things have a soul that helps them grow and move. He also talked about how we remember things and what happens when we dream.

Practical philosophy

Aristotle's practical philosophy covers areas such as ethics, politics, economics, and rhetoric.

Ethics

Main article: Aristotelian ethics

Aristotle thought about what makes a good life. He believed that being good comes from doing the right things, not just knowing what is right. He wrote about this in his work called Nicomachean Ethics.

Aristotle said that everything has a special purpose. For example, the purpose of an eye is to see. He thought that people also have a special purpose, which is to live a good and happy life. To be happy, people need to develop good habits and choose to do the right things. When people live this way, they become wise and understand what truly matters.

Politics

Main article: Politics (Aristotle)

Aristotle also wrote about how cities should be run. He thought that a city is like a living thing, with each part needing the others to work well. He believed that people are naturally meant to live together in communities. Aristotle said that the goal of a city is not just to avoid problems, but to help people live good and meaningful lives.

Economics

Main article: Politics (Aristotle)

Aristotle talked about money and trade in his writings. He explained that money was created because people needed to trade things with each other. He thought that money helps people exchange goods fairly. Aristotle also shared his ideas about buying and selling, saying that some ways of making money were not natural or fair.

Rhetoric

Main article: Rhetoric (Aristotle)

Aristotle studied how people can persuade others. He said that a good speaker uses three things: their own character, the feelings of the audience, and logical reasons. He also described different kinds of speeches, like those used in ceremonies, courts, or important decisions.

Poetics

Main article: Poetics (Aristotle)

Aristotle wrote about stories and art. He thought that art, like painting or music, imitates life in different ways. He believed that stories, especially tragedies, show important parts of life and help people feel deep emotions. Aristotle said that each kind of art has its own special way of showing things.

Legacy

Further information: List of writers influenced by Aristotle

Even more than 2300 years after his death, Aristotle is still one of the most important thinkers ever. He helped shape many areas of knowledge and started new fields of study. Many people think he knew more than anyone before him. He is often called the first scientist.

Aristotle started the study of logic, looked at animals, and shared his ideas about how to study the world. His work influenced many areas, including ideas about right and wrong, how governments should work, and how we understand stories. Because of this, many of our ideas today still show Aristotle’s thinking.

Depictions in art

Paintings

Aristotle has appeared in many artworks by famous painters such as Lucas Cranach the Elder, Justus van Gent, Raphael, and Rembrandt. One well-known painting is Raphael's The School of Athens, where Aristotle and Plato are shown as the main figures. Rembrandt also painted a famous work called Aristotle with a Bust of Homer, which shows Aristotle with an older man.

Sculptures

There are statues and reliefs of Aristotle as well. For example, there is a stone statue in Gladstone's Library in Hawarden, Wales, made in 1899, and a bronze statue at the University of Freiburg in Germany, created in 1915.

Eponyms

The Aristotle Mountains in Antarctica are named after Aristotle. He was the first to say that there might be land far to the south, which he called Antarctica. There is a crater on the Moon named Aristoteles. An asteroid, (6123) Aristoteles, in the main asteroid belt, is also named for him.