Several of the most influential Greek philosophers and thinkers are portrayed in Raphael’s masterpiece the School of Athens, which adorns the Apostolic Palace in the Vatican.

Painted between 1509 and 1511, it portrays a congregation of philosophers, mathematicians, and scientists from Ancient Greece, including Plato and Aristotle. But did you know that, in addition to the two philosophers in the center of the painting, there are six more “hiding”?

In his work, Raphael desired to pay his deepest tribute to the greatest philosophers in history, several of whom had tried throughout their lives to discover the prime mover, or cause, in the universe, a branch of thought known as the “knowledge of the first causes.”

It also shows sculptures of the Greek gods Athena, portrayed as the Roman goddess Minerva, representing Wisdom, and Apollo, representing Light and Music, in a direct nod to the greatness of Greek mythology and its contributions to the Western world. In short, Raphael’s painting is the Who’s Who of ancient Greek culture.

Who are the ancient Greek philosophers in Raphael’s painting?

Plato and Aristotle

The two main figures in the work are placed directly under the archway and in the fresco’s vanishing point, a compositional trick meant to draw the viewer’s eye to the most important part of the painting. Here, we see two men who effectively represent the different schools of philosophy—Plato and Aristotle.

An elderly Plato stands on the left, pointing his finger to the sky. Beside him is his student, Aristotle. In a display of superb foreshortening, Aristotle reaches his right arm directly out toward the viewer. Each man holds a copy of their books in their left hand—Timaeus for Plato and Nicomachean Ethics for Aristotle.

Socrates, the founder of Western philosophy

To the left of Plato, Socrates is recognizable thanks to his distinct features. It is said that Raphael was able to use an ancient portrait bust of the philosopher as his guide.

Among the crowd surrounding Socrates are his students, including the general Alcibiades and Aeschines of Sphettus.

Socrates is credited as the founder of Western philosophy and was among the first moral philosophers of the ethical tradition of thought.

Pythagoras, the theorist of metempsychosis

In the foreground, Pythagoras sits with a book and an inkwell, also surrounded by students.

The influence of Pythagoras in mathematics and philosophy remains indisputable to this day. His philosophy influenced both Plato and Aristotle, and through them, his ideas became fundamental to Western philosophy.

The teaching most securely identified with Pythagoras is metempsychosis, or the “transmigration of souls,” which holds that every soul is immortal and, upon death, enters into a new body.

Euclid, the father of geometry

Mirroring Pythagoras’ position on the other side, Euclid, considered the “father of geometry,” is bent over demonstrating something with a compass. His young students eagerly try to grasp the lessons he’s teaching them.

Euclid is chiefly known for the Elements treatise, which established the foundations of geometry that largely dominated the field until the early 19th century.

Ptolemy, the great mathematician and astronomer

The great mathematician and astronomer Ptolemy is right next to Euclid, with his back to the viewer. Wearing a yellow robe, he holds a terrestrial globe in his hand. It is believed that the bearded man standing in front of him holding a celestial globe is the astronomer Zoroaster.

Ptolemy wrote about a dozen scientific treatises, some of which were of importance to later Byzantine, Islamic, and Western European science.

Diogenes: The ancient Greek philosopher of cynicism

Diogenes was the founder of the philosophy of Cynicism and was a controversial figure in his day, living a simple life and criticizing cultural conventions.

Diogenes the Cynic (also known as Diogenes of Sinope) could have been the first anarchist, absurdist, satirist, or naturalist—depending on the reader’s point of view. By today’s standards, Diogenes was a homeless man by choice, and his life goal was the search for wisdom.

Heraclitus: The Greek philosopher of wisdom

Heraclitus was an ancient Greek pre-Socratic philosopher from the city of Ephesus, then part of the Persian Empire. He saw the world as constantly in flux, changing as it remained the same, and expressed this in saying, “No man ever steps in the same river twice.”

He was a self-taught pioneer of wisdom and a melancholy character who did not enjoy the company of others, making him one of the few isolated characters in the fresco.

Stoicism, was one of ancient Greece’s philosophical movements founded by Zeno of Citium in Athens in the early 3rd century BC.

Stoicism is a philosophy of personal ethics informed by its system of logic and its views on the natural world. For the Stoic, virtue alone is sufficient for human happiness.

For Stoics, emotions like fear, envy, passionate love were merely false judgements and the sage, a person who had attained moral and intellectual perfection, would not be touched by them.

It is a philosophy of life where the individual maximizes positive emotions, reduces negative emotions, and helps him or herself hone their virtues of character.

The name derives from the porch (stoa poikile) in the Agora at Athens decorated with mural paintings, where the members of the school congregated, and their lectures were held.

Birth of Stoicism, one of ancient Greece’s philosophical movements

The philosophy of Stoicism was originally known as “Zenonism” after the founder, Zeno of Citium.

Zeno ended up in Athens after his ship wrecked near the city. He was not a philosopher, but he turned his misfortune into an opportunity by studying all the philosophical resources available in the city.

He sat in on lectures from the other schools of philosophy (e.g., Cynicism, Epicureanism) and eventually started his own.

However, the Stoics did not believe that the founders were perfectly wise. In order to avoid their philosophy becoming a cult of personality, they chose to name it Stoicism after the place they were meeting, the stoa poikile of the Agora.

Zeno’s ideas developed from those of the Cynics, whose founding father, Antisthenes, had been a disciple of Socrates. Zeno’s most influential follower was Chrysippus, who was responsible for molding what is now called Stoicism.

Other prominent Stoics included Cleanthes of Assos, Panaetius of Rhodes, Aristo of Chios, Posidonius of Apameia, Diodotus, and others.

Later, Seneca, Epictetus, and Roman emperor Marcus Aurelius ushered Stoicism to the Roman world. The philosophy flourished until the 3rd century AD.

Stoic Philosophy

According to Stoicism, the path to eudaimonia (happiness) is embracing and accepting the moment as it presents itself by not allowing oneself to be controlled by the desire for pleasure or by the fear of pain.

The Stoic must use his or her mind to understand the world and to do one’s part in nature’s plan by working together and treating others fairly and justly.

The Stoics are especially known for the teaching “virtue is the only good” and that people must lead a virtuous life to be accomplished and complete human beings.

External things—such as health, wealth, and pleasure—are not good or bad in and of themselves but have value as “material for virtue to act upon.”

The Stoics also held that certain destructive emotions, such as fear or jealousy, resulted from errors of judgment, and they believed people should aim to maintain a prohairesis (will) that is “in accordance with nature.”

To live a good life, a person had to understand the rules of the natural order, Stoics believed, since everything was rooted in nature.

For many Stoics, virtue is sufficient for happiness. Thus, a sage would be emotionally resilient to misfortune and would therefore be considered truly free.

According to Stoics, people don’t truly have control over many things and situations in life. Therefore, they believe that worrying about things outside of their control is unproductive, or even irrational for a person who wants to attain tranquility and happiness.

Stoics differentiate between what is and what is not under human control and do not waste energy and thoughts over uncontrollable adverse events.

Where many people worry endlessly about things out of their control, the Stoics believe they should expend their energy in thinking of creative solutions to problems, rather than the issues themselves.

Stoicism is not about having a set of beliefs or ethical claims. It is not a school of philosophy that is separate from everyday life.

The stoic must continuously practice and train (“askesis”). Stoic philosophical and spiritual practices include logic, Socratic dialogue and self-dialogue.

Influence of Stoicism on Christianity

The virtuous life of the Stoic has resemblances to a life led by a good Christian. Stoic writings such as “Meditations,” by Marcus Aurelius, have been highly regarded by many Christians throughout the centuries.

The Greek term for word is logos. The Greek philosopher Heraclitus used logos (the word) to explain what he saw as the universal force of reason that governed everything.

In the 5th century BC, Heraclitus said that all things happen according to the Logos. The Stoics also believed in the Logos, along with the notions of conscience and virtue.

A few centuries later, Greek-speaking Jews came to view the Logos as a force sent by God. In the Gospel of John, Jesus is referred to as the Word — “and the Word of God was made flesh and dwelt among men.”

The apostle Paul is known to have met with Stoics during his stay in Athens. In his letters, Paul reflected on his knowledge of Stoic philosophy, using Stoic terms and metaphors to assist new converts in their understanding of Christianity.

Both Stoicism and Christianity teach a person the importance of training their mind and body to be disciplined.

Both encourage the elimination of passions and inferior emotions, such as lust and envy, from one’s life, so that the higher possibilities of one’s humanity can be awakened and developed.

“If you want to be perfect, go, sell your possessions and give to the poor, and you will have treasure in heaven,” Jesus preached.

Similarly, as Seneca wrote, “We must give up many things to which we are addicted, considering them to be good.”

The Eastern Orthodox Church and Oriental Orthodox Church accept the Stoic ideal of dispassion to this day, as do ascetics all over the world.

Stoicism today

Daily Stoic, How to be a Stoic, The Modern Times Stoic, Modern Stoicism, Traditional Stoicism: these are only a handful of the websites that hail the importance of—even the need for—Stoicism in the 21st century.

Is it possible, though, for today’s man to embrace a philosophy that teaches indifference to material things and possessions in a ruthlessly material world?

An intellectual and popular movement called Modern Stoicism began at the end of the 20th century which is aimed at reviving the practice of Stoicism.

However, before that, Stoic philosophy served as the original philosophical inspiration for modern cognitive psychotherapy, particularly as mediated by Dr. Albert Ellis’ Rational-Emotive Behavior Therapy (REBT), the major precursor of Cognitive Behavioral Therapy (CBT).

In the original cognitive therapy treatment manual for depression by Aaron T. Beck et al., it is stated, “The philosophical origins of cognitive therapy can be traced back to the Stoic philosophers.”

A well-known quotation from the “Enchiridion” of Epictetus was taught to most clients during the initial session by Ellis and his followers: “It’s not the events that upset us, but our judgments about the events.”

This subsequently became a common element in the socialization phase of many other approaches to CBT.

Ryan Holiday’s The Obstacle is the Way; Stoicism—A Stoic Approach to Modern Life, by Tom Miles; Modern Stoicism, by Steve Brooks; and Modern Stoicism—How to Be a Stoic in the 21st Century, by Stephen Ryan are some of the books on Stoicism that have been published recently.

Famous Stoic quotes

“The happiness of your life depends upon the quality of your thoughts.”

“Luck is what happens when preparation meets opportunity.”

“You have power over your mind—not outside events. Realize this, and you will find strength.”

“It is not death that a man should fear, but he should fear never beginning to live.”

“Think of yourself as dead. You have lived your life. Now take what’s left and live it properly.”

“To live a good life; we all have the potential for it, if we learn to be indifferent to what makes no difference.”

“Death smiles at us all, but all a man can do is smile back.”

“Accept whatever comes to you woven in the pattern of your destiny, for what could more aptly fit your needs?”

“The object of life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane.”

“The best revenge is not to be like your enemy.”

“Very little is needed to make a happy life; it is all within yourself, in your way of thinking.”

“Loss is nothing else but change, and change is nature’s delight.”

“It is not because things are difficult that we don’t dare; it is because we do not dare that things are difficult.”

“A gem cannot be polished without friction, nor a man perfected without trials.”

“The bravest sight in the world is to see a man struggling against adversity.”

“Throw me to the wolves and I will return leading the pack.”

“Life is never incomplete if it is an honorable one. At whatever point you leave life, if you leave it in the right way, it is whole.”

“Man is affected not by events, but by the view he takes of them.”

“Sometimes even to live is an act of courage.”

“If you really want to escape the things that harass you, what you’re needing is not to be in a different place but to be a different person.”

“He suffers more than necessary, who suffers before it is necessary.”

“It is not the man who has too little, but the man who craves more, that is poor.”

“If a man knows not to which port he sails, no wind is favorable.”

“If you want to improve, be content to be foolish and stupid.”

“The world turns aside to let any man pass who knows where he is going.”

“Seek not the good in eternal things, seek it in yourselves.”

“It is the nature of the wise to resist pleasures, but the foolish to be a slave to them.”

“No man is free who is not a master of himself.”

“It is impossible to begin to learn that which one thinks one already knows.”

“Never depend on the admiration of others. There is no strength in it. Personal merit cannot be derived from an external source.”