5 Aristotle : Aristotle was a Greek scientist and philosopher, he was taught by Plato, and then went on to tutor Alexander the Great. Aristotle believed in Platonism for much of his life, but eventually started to follow empiricism instead. He believed all human, knowledge, and concepts was based on perception. He is the first person known to study logic, and made observations hundreds of years ahead of his time. Aristotle wrote hundreds of books, but only around a third of his work has survived over the years. Aristotle is seen by some as the first scientist in history. Aristotle started a in the Lyceum, which was a temple dedicated to Appollo Lyceus.