Aristoteles
In short
An ancient Greek philosopher who laid the foundations for Western logic, science, and biology. He was a student of Plato and the tutor to Alexander the Great.
In plain words
He was a thinker who believed we learn about the world by observing things around us. He categorised animals, plants, and even how humans think. His ideas shaped how people studied science for thousands of years.
A simple example
Instead of just thinking about the idea of a dog, he would watch real dogs to see how they behave and what makes them different from wolves.
Why it matters
His methods of categorising information and using logic are still used in modern science and debate. Much of how we organise knowledge today started with his work.
Easy to mix up
Do not confuse him with Plato, who was his teacher and held more idealistic views about reality.