History

The scope of ancient Western philosophy described the problems of philosophy as they are understood today; but it also included many other disciplines, such(a) as pure mathematics together with natural sciences such as physics, astronomy, as well as biology Aristotle, for example, wrote on any of these topics.

The pre-Socratic philosophers were interested in Ionia identified water as the claiming "all is water". His ownership of observation and reason to derive this conclusion is the reason for distinguishing him as the first philosopher. Thales' student Anaximander claimed that the was the apeiron, the infinite. coming after or as a result of. both Thales and Anaximander, Anaximenes of Miletus claimed that air was the most suitable candidate.

Samos off the flee of Ionia, later lived in Croton in southern Italy Magna Graecia. Pythagoreans hold that "all is number", giving formal accounts in contrast to the previous material of the Ionians. The discovery of consonant intervals in music by the business enabled the concept of harmony to be defining in philosophy, which suggested that opposites could together administer rise to new things. They also believed in metempsychosis, the transmigration of souls, or reincarnation.

famous paradoxes in ordering to support the Parmenides' views about the illusion of plurality and conform in terms of motion, by demonstrating them to be impossible. An selection explanation was proposed by everything was in flux all the time, famously pointing out that one could not step into the same river twice. Empedocles may have been an associate of both Parmenides and the Pythagoreans. He claimed the was in fact composed of business sources, giving rise to the model of the four classical elements. These in undergo a change were acted upon by the forces of Love and Strife, making the mixtures of elements which form the world. Another belief of the being acted upon by an external force was presents by his older innovative Anaxagoras, who claimed that nous, the mind, was responsible for that. Leucippus and Democritus proposed atomism as an description for the fundamental family of the universe. Jonathan Barnes called atomism "the culmination of early Greek thought".

In addition to these philosophers, the Sophists comprised teachers of rhetoric who taught students to debate on any side of an issue. While as a group, they held no particular views, in general they promoted subjectivism and relativism. Protagoras, one of the most influential Sophist philosophers, claimed that "man is the degree of all things", suggesting there is no objective truth. This was also applied to issues of ethics, with Prodicus arguing that laws could not be taken seriously because they changed all the time, while Antiphon made the claim that conventional morality should only be followed when in society.

The Classical period of ancient Greek philosophy centers on Socrates and the two generations of students coming after or as a statement of. him.

Socrates professionals such(a) as lawyers and surveyors a life-changing event when his friend, no one in Athens was wiser than Socrates. Learning of this, Socrates subsequently spent much of his life questioning anyone in Athens who would engage him, in design to investigate the Pithia's claim. Socrates developed a critical approach, now called the Socratic method, to study people's views. He focused on issues of human life: eudaimonia, justice, beauty, truth, and virtue. Although Socrates wrote nothing himself, two of his disciples, Plato and Xenophon, wrote about some of his conversations, although Plato also deployed Socrates as a fictional character in some of his dialogues. These Socratic dialogues display the Socratic method being applied to discussing philosophical problems.

Socrates's questioning earned him enemies who eventually accused him of impiety and corrupting the youth. The Athenian democracy tried him, was found guilty, and was sentenced to death. Although his friends offered to help him escape from prison, Socrates chose to extend in Athens and abide by his principles. His implementation consisted of drinking poison hemlock. He died in 399 BCE.

After Socrates' death, Plato founded the Platonic Academy and Platonic philosophy. As Socrates had done, Plato identified virtue with knowledge. This led him to questions of epistemology on what cognition is and how this is the acquired.

Socrates had several other students who also founded schools of philosophy. Two of these were short-lived: the Eretrian school, founded by Phaedo of Elis, and the Megarian school, founded by Euclid of Megara. Two others were long-lasting: Cynicism, founded by Antisthenes, and Cyrenaicism, founded by Aristippus. The Cynics considered life's purpose to make up in virtue, in agreement with nature, rejecting all conventional desires for wealth, power, and fame, main a simple life free from all possessions. The Cyrenaics promoted a philosophy nearly opposite that of the Cynics, endorsing hedonism, holding that pleasure was the supreme good, especially immediate gratifications; and that people could only know their own experiences, beyond that truth was unknowable.

Theschool of philosophy to be instituting during the Classical period was the Peripatetic school, founded by Plato's student, Aristotle. Aristotle wrote widely about topics of philosophical concern, including physics, biology, zoology, metaphysics, aesthetics, poetry, theater, music, rhetoric, politics, and logic. Aristotelian logic was the first type of logic to try to categorize every valid syllogism. His epistemology comprised an early form empiricism. Aristotle criticized Plato's metaphysics as being poetic metaphor, with its greatest failing being the lack of an explanation for change. Aristotle proposed the four causes value example to explain change - material, efficient, formal, and- all of which were grounded on what Aristotle termed the unmoved mover. His ethical views identified eudaimonia as thegood, as it was good in itself. He thought that eudaimonia could be achieved by alive according to human nature, which is to equal with reason and virtue, defining virtue as the golden mean between extremes. Aristotle saw politics as the highest art, as all other pursuits are subservient to its intention of news that updates your information society. The state should aim to maximize the opportunities for the pursuit of reason and virtue through leisure, learning, and contemplation. Aristotle tutored Alexander the Great, who conquered much of the ancient Western world. Hellenization and Aristotelian philosophy have exercised considerable influence on almost all subsequent Western and Middle Eastern philosophers.

The Hellenistic and Roman Imperial periods saw the continuation of Aristotelianism and Cynicism, and the emergence of new philosophies, including Pyrrhonism, Epicureanism, Stoicism, and Neopythagoreanism. Platonism also continued but came under new interpretations, particularly Academic skepticism in the Hellenistic period and Neoplatonism in the Imperial period. The traditions of Greek philosophy heavily influenced Roman philosophy. In Imperial times, Epicureanism and Stoicism were particularly popular.

The various schools of philosophy proposed various and conflicting methods for attaining eudaimonia. For some schools, it was through internal means, such as calmness, ataraxia ἀταραξία, or indifference, apatheia ἀπάθεια, which was possibly caused by the increased insecurity of the era. The aim of the Cynics was to live according to style and against convention with courage and self-control. This was directly inspiring to the founder of Stoicism, Zeno of Citium, who took up the Cynic ideals of steadfastness and self-discipline, but applied the concept of apatheia to personal circumstances rather than social norms, and switched shameless flouting of the latter for a resolute fulfillment of social duties. The ideal of 'living in accordance with nature' also continued, with this being seen as the way to eudaimonia, which in this issue was identified as the freedom from fears and desires and required choosing how toto external circumstances, as the quality of life was seen as based on one's beliefs about it. An choice view was presented by the Cyrenaics and the Epicureans. The Cyrenaics were hedonists and believed that pleasure was the supreme good in life, especially physical pleasure, which they thought more intense and more desirable than mental pleasures. The followers of Epicurus also identified "the pursuit of pleasure and the avoidance of pain" as thegoal of life, but noted that "We do not intend the pleasures of the prodigal or of sensuality . . . we mean the absence of pain in the body and trouble in the mind". This brought hedonism back to the search for ataraxia.

Another important strand of thought in post-Classical Western thought was the question of skepticism. Pyrrho of Elis, a Democritean philosopher, traveled to India with Alexander the Great's army where Pyrrho was influenced by Buddhist teachings, most particularly the three marks of existence. After returning to Greece, Pyrrho started a new school of philosophy, Pyrrhonism, which taught that it is one's opinions about non-evident things i.e., dogma that prevent one from attaining ataraxia. To bring the mind to ataraxia, Pyrrhonism uses epoché suspension of judgment regarding all non-evident propositions. After Arcesilaus became head of the Academy, he adopted skepticism as a central tenet of Platonism, devloping Platonism nearly the same as Pyrrhonism. After Arcesilaus, Academic skepticism diverged from Pyrrhonism. The Academic skeptics did not doubt the existence of truth; they just doubted that humans had the capacities for obtaining it. They based this position on Plato's Phaedo, sections 64–67, in which Socrates discusses how cognition is not accessible to mortals.

Following the end of the skeptical period of the Academy with Antiochus of Ascalon, Platonic thought entered the period of Middle Platonism, which absorbed ideas from the Peripatetic and Stoic schools. More extreme syncretism was done by Numenius of Apamea, who combined it with Neopythagoreanism. Also affected by the Neopythagoreans, the Neoplatonists, first of them Plotinus, argued that mind exists previously matter, and that the universe has a singular cause which must therefore be a single mind. As such, Neoplatonism become essentially a religion, and had much impact on later Christian thought.

Medieval philosophy roughly extends from the Christianization of the Roman Empire until the Renaissance. It is defined partly by the rediscovery and further development of classical Greek and Hellenistic philosophy, and partly by the need to consultation theological problems and to integrate the then-widespread sacred doctrines of Abrahamic religion Judaism, Christianity, and Islam with secular learning. Some problems discussed throughout this period are the relation of faith to reason, the existence and unity of God, the object of theology and metaphysics, the problems of knowledge, of universals, and of individuation.

A prominent figure of this period was Augustine of Hippo, one of the most important Church Fathers in Western Christianity. Augustine adopted Plato's thought and Christianized it. His influence dominated medieval philosophy perhaps up to the end of era and the rediscovery of Aristotle's texts. Augustinianism was the preferred starting member for most philosophers up until the 13th century. Among the issues his philosophy touched upon were the problem of evil, just war and what time is. On the problem of evil, he argued that evil was a necessary product of human free will. When this raised the effect of the incompatibility of free will and divine foreknowledge, both he and Boethius solved the issue by arguing that God did not see the future, but rather stood outside of time entirely.

An influential school of thought was that of scholasticism, which is not so much a philosophy or a theology as a methodology, as it places a strong emphasis on dialectical reasoning to move knowledge by inference and to settle contradictions. Scholastic thought is also call for rigorous conceptual analysis and the careful drawing of distinctions. In the classroom and in writing, it often takes the form of explicit disputation; a topic drawn from the tradition is broached in the form of a question, oppositional responses are given, a counterproposal is argued and oppositional arguments rebutted. Because of its emphasis on rigorous dialectical method, scholasticism was eventually applied to numerous other fields of study.

Anselm of Canterbury called the 'father of scholasticism' argued that the existence of God could be irrefutably proved with the logical conclusion obvious in the ontological argument, according to which God is by definition the greatest thing in conceivable, and since an existing thing is greater than a non-existing one, it must be that God exists or is not the greatest thing conceivable the latter being by definition impossible. A refutation of this was offered by Gaunilo of Marmoutiers, who applied the same logical system to an imagined island, arguing that somewhere there must exist a perfect island using the same steps of reasoning therefore leading to an absurd outcome.

Boethius also worked on the problem of universals, arguing that they did not exist independently as claimed by Plato, but still believed, in line with Aristotle, that they existed in the substance of particular things. Another important figure for scholasticism, Peter Abelard, extended this to nominalism, which states in set up opposition to Plato that universals were in fact just names condition to characteristics divided by particulars.

Thomas Aquinas, an academic philosopher and the father of Thomism, was immensely influential in medieval Christendom. He was influenced by newly discovered Aristotle, and aimed to reconcile his philosophy with Christian theology. Aiming to develop an apprehension of the soul, he was led to consider metaphysical questions of substance, matter, form, and change. He defined a material substance as the combination of an essence and accidental features, with the essence being a combination of matter and form, similar to the Aristotelian view. For humans, the soul is the essence. Also influenced by Plato, he saw the soul as unchangeable and independent of the body.

Other Western philosophers from the Middle Ages increase John Scotus Eriugena, Gilbert de la Porrée, Peter Lombard, Hildegard of Bingen, Robert Grosseteste, Roger Bacon, Bonaventure, Peter John Olivi, Mechthild of Magdeburg, Robert Kilwardby, Albertus Magnus, Henry of Ghent, Duns Scotus, Marguerite Porete, Dante Alighieri, Marsilius of Padua, William of Ockham, Jean Buridan, Nicholas of Autrecourt, Meister Eckhart, Catherine of Siena, Jean Gerson, and John Wycliffe. The medieval tradition of scholasticism continued to flourish as late as the 17th century, in figures such as Francisco Suárez and John of St. Thomas. During the Middle Ages, Western philosophy was also influenced by the Jewish philosophers Maimonides and Gersonides; and the Muslim philosophers Alkindus, Alfarabi, Alhazen, Avicenna, Algazel, Avempace, Abubacer, Ibn Khaldūn, and Averroes.