Zeno of Citium

Stoicism is an ancient Greek and then Roman philosophy of the Hellenistic and Roman Imperial periods. The Stoics believed that the universe operated according to reason, or logos, providing a unified account of the world, constructed from ideals of rational discourse, monistic physics, and naturalistic ethics. These three ideals constitute virtue, which is necessary for the Stoic goal of 'living a well-reasoned life'.

Stoic logic focuses on highly intentional reasoning through propositions, arguments, and the differentiation between truth and falsehood. Philosophical discourse is paramount in Stoicism, including the view that the mind is in rational dialogue with itself. Stoic ethics centers on virtue as the highest good, cultivating emotional self-control, a calm problem-solving state of mind, and rational judgment to attain lifelong flourishing (eudaimonia). At the same time, passions, anxieties, and insecurities are viewed as misguided reactions that ought to be controlled through self-disciplined practice. Of all the schools of ancient Western philosophy, Stoicism made the greatest claim to being utterly systematic.

Eternal return (or eternal recurrence) is a philosophical concept which states that time repeats itself in an infinite loop, and that exactly the same events will continue to occur in exactly the same way, over and over again, for eternity.

In ancient Greece, the concept of eternal return was most prominently associated with Empedocles and with Stoicism, the school of philosophy founded by Zeno of Citium. The Stoics believed that the universe is periodically destroyed and reborn, and that each universe is exactly the same as the one before. This doctrine was fiercely criticised by Christian authors such as Augustine, who saw in it a fundamental denial of free will and of the possibility of salvation. The spread of Christianity therefore diminished classical theories of eternal return.

Katalepsis (Greek: κατάληψις, "grasping") is a term in Stoic philosophy for a concept roughly equivalent to modern comprehension. To the Stoic philosophers, katalepsis was an important premise regarding one's state of mind as it relates to grasping fundamental philosophical concepts, which was followed by the assent, or adherence to the truth thus understood.

According to the Stoics, the mind is constantly being bombarded with impressions (phantasiai). Some of these impressions are true and some false. Impressions are true when they are truly affirmed, false if they are wrongly affirmed. Cicero relates that Zeno would illustrate katalepsis as follows:

Larnaca, also spelled Larnaka, is a city on the southeast coast of Cyprus and the capital of the district of the same name. With a district population of 155,000 in 2021, it is the third largest city in the country after Nicosia and Limassol.

Built on the ruins of Citium - the Ancient Greek city-state - best known as the birthplace of Stoic philosopher Zeno of Citium - Larnaca is home to the Church of Saint Lazarus, Hala Sultan Tekke, the Kamares Aqueduct, Larnaca Castle, Larnaca District Archaeological Museum, and Pierides Museum. It attracts many visitors to its beaches, as well as to Finikoudes (Φοινικούδες; Greek for "palm trees"), the city's signature seafront promenade lined with palm trees. It gives its name to the country's primary airport, Larnaca International Airport, which is situated in the neighbouring village of Dromolaxia rather than Larnaca proper. It also has a seaport and a marina.

In Hellenistic philosophy, phantasiai (φαντασίαι) are pieces of information received from sense experience. The Pyrrhonists, Epicureans, and Stoics use the term to refer to information received through the senses and arising in thoughts.

In Stoicism, the phantasiai represent pre-cognitive judgments originating from our previous experiences or our subconscious thinking. The founder of Stoicism, Zeno of Citium, suggested that the soul is imprinted by the senses much in the same way as a signet ring imprints its shape in soft wax; all psychological states and activities, such as mental assent, cognition, impulse, and knowledge are all either extensions or responses to phantasiai. According to Epictetus, the sage avoids doxa, a weak or false belief, by withholding assent when conditions do not permit a clear and certain grasp of the truth of a matter. Some phantasiai experienced in perceptually ideal circumstances, however, are so clear and distinct that they could only come from a real object; these were said to be kataleptikê (fit to grasp). The kataleptic phantasiai compels assent by its very clarity and represents the criterion of truth.

Chrysippus of Soli (/kraɪˈsɪpəs, krɪ-/; Ancient Greek: Χρύσιππος ὁ Σολεύς, Chrusippos ho Soleus; c. 279 – c. 206 BC) was a Greek Stoic philosopher. He was a native of Soli, Cilicia, but moved to Athens as a young man, where he became a pupil of the Stoic philosopher Cleanthes. When Cleanthes died, around 230 BC, Chrysippus became the third head of the Stoic school. A prolific writer, Chrysippus expanded the fundamental doctrines of Cleanthes' mentor Zeno of Citium, the founder and first head of the school, which earned him the title of the Second Founder of Stoicism.

Chrysippus excelled in logic, the theory of knowledge, ethics, and physics. He created an original system of propositional logic in order to better understand the workings of the universe and role of humanity within it. He adhered to a fatalistic view of fate, but nevertheless sought a role for personal agency in thought and action. Ethics, he thought, depended on understanding the nature of the universe, and he taught a therapy of extirpating the unruly passions which depress and crush the soul. He initiated the success of Stoicism as one of the most influential philosophical movements for centuries in the Greek and Roman world. The linguistic orientation of Chrysippus' work made it difficult for its students even within the Stoic school.