One of the greatest intellectual figures, Aristotle was an Ancient Greek philosopher and scientist. Along with Plato – another outstanding philosopher – Aristotle is referred to as the “Father of Western Philosophy.”

After Plato’s death, Aristotle left Athens and became the tutor of Alexander the Great. Teaching a king had opened him many doors and opportunities, so later on he founded his own school in Athens – the Lyceum. Aristotle is best known as the founder of formal logic.

The philosopher’s goal was to come up with a universal process of reasoning that would help people be able to learn anything. Many of his principles, observations and theories on subjects like physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theatre, music, rhetoric, psychology, linguistics, economics and politics were universally accepted by Western philosophers until the 19th century.

Aristotle basically influenced almost all forms of knowledge. Some of his most important works include Nichomachean Ethics, Politics, Metaphysics, On the Soul, Poetics and Prior Analytics.

Here are 20 Aristotle quotes to help you develop your logical thinking.