In metaphysics, nominalism is the view that universals and abstract objects do not actually exist other than being merely names or labels. There are at least two main versions of nominalism. One version denies the existence of universals – things that can be instantiated or exemplified by many particular things. The other version specifically denies the existence of abstract objects – objects that do not exist in space and time.
In the philosophy of mathematics, the abstraction of actual infinity, also called completed infinity, involves infinite entities as given, actual and completed objects.
Scholasticism was a medieval school of philosophy that employed a critical organic method of philosophical analysis predicated upon Aristotelianism and the Ten Categories. Christian scholasticism emerged within the monastic schools that translated scholastic Judeo-Islamic philosophies, and "rediscovered" the collected works of Aristotle. Endeavoring to harmonize his metaphysics and its account of a prime mover with the Latin Catholic dogmatic trinitarian theology, these monastic schools became the basis of the earliest European medieval universities, and thus became the bedrock for the development of modern science and philosophy in the Western world. Scholasticism dominated education in Europe from about 1100 to 1700. The rise of scholasticism was closely associated with these schools that flourished in Italy, France, Portugal, Spain and England.
In classical rhetoric and logic, begging the question or assuming the conclusion is an informal fallacy that occurs when an argument's premises assume the truth of the conclusion. Historically, begging the question refers to a fault in a dialectical argument in which the speaker assumes some premise that has not been demonstrated to be true. In modern usage, it has come to refer to an argument in which the premises assume the conclusion without supporting it. This makes it an example of circular reasoning.
Reality is the sum or aggregate of all that is real or existent within the universe, as opposed to that which is only imaginary, nonexistent or nonactual. The term is also used to refer to the ontological status of things, indicating their existence. In physical terms, reality is the totality of a system, known and unknown.
To Sumerians, Babylonians, Assyrians, and Jews there were male and female demons. In Christian demonology and theology there is debate over the gender and sexual proclivities of demons. These questions are referenced in Italian, French, Spanish and Portuguese phrases that imply that the question is pointless and unanswerable, akin to the English phrase How many angels can dance on the head of a pin?.
Henry More was an English philosopher of the Cambridge Platonist school.
Natural philosophy or philosophy of nature is the philosophical study of physics, that is, nature and the physical universe. It was dominant before the development of modern science.
The Euthyphro dilemma is found in Plato's dialogue Euthyphro, in which Socrates asks Euthyphro, "Is the pious loved by the gods because it is pious, or is it pious because it is loved by the gods?" (10a)
Pinhead is a fictional character and the main antagonist of the Hellraiser franchise. The character first appeared as an unnamed figure in the 1986 Clive Barker novella The Hellbound Heart. When Clive Barker adapted the novella into the 1987 film Hellraiser, he referred to the character in early drafts as "the Priest" but the final film gave no name. The production and make-up crew nicknamed the character "Pinhead"—derived from his bald head studded with nails—and fans accepted the sobriquet. The name was then used in press materials, tie-in media, and on-screen in some of the film's sequels, although Barker himself despises the moniker.
The Oxford Calculators were a group of 14th-century thinkers, almost all associated with Merton College, Oxford; for this reason they were dubbed "The Merton School". These men took a strikingly logical and mathematical approach to philosophical problems. The key "calculators", writing in the second quarter of the 14th century, were Thomas Bradwardine, William Heytesbury, Richard Swineshead and John Dumbleton. Using the slightly earlier works of Walter Burley, Gerard of Brussels, and Nicole Oresme, these individuals expanded upon the concepts of 'latitudes' and what real world applications they could apply them to.
An appeal to nature is a rhetorical technique for presenting and proposing the argument that "a thing is good because it is 'natural', or bad because it is 'unnatural'." In debate and discussion, an appeal-to-nature argument can be considered to be a bad argument, because the implicit primary premise "What is natural is good" has no factual meaning beyond rhetoric in some or most contexts.
Philosophy of language investigates the nature of language and the relations between language, language users, and the world. Investigations may include inquiry into the nature of meaning, intentionality, reference, the constitution of sentences, concepts, learning, and thought.
The Sister Catherine Treatise is a work of medieval Christian mysticism seen as representative of the Heresy of the Free Spirit of the thirteenth and fourteenth centuries in Europe. Wrongly attributed to Christian mystic Meister Eckhart, it nevertheless shows the influence of his ideas or at least the ideas which he was accused or attributed as having had by the Inquisition.
Cartesianism is the philosophical and scientific system of René Descartes and its subsequent development by other seventeenth century thinkers, most notably François Poullain de la Barre, Nicolas Malebranche and Baruch Spinoza. Descartes is often regarded as the first thinker to emphasize the use of reason to develop the natural sciences. For him, philosophy was a thinking system that embodied all knowledge.
The Isagoge or "Introduction" to Aristotle's "Categories", written by Porphyry in Greek and translated into Latin by Boethius, was the standard textbook on logic for at least a millennium after his death. It was composed by Porphyry in Sicily during the years 268–270, and sent to Chrysaorium, according to all the ancient commentators Ammonius, Elias, and David. The work includes the highly influential hierarchical classification of genera and species from substance in general down to individuals, known as the Tree of Porphyry, and an introduction which mentions the problem of universals.
In scholastic philosophy, the aevum is the temporal mode of existence experienced by angels and by the saints in heaven. In some ways, it is a state that logically lies between the eternity (timelessness) of God and the temporal experience of material beings. It is sometimes referred to as "improper eternity".
Medieval philosophy is the philosophy that existed through the Middle Ages, the period roughly extending from the fall of the Western Roman Empire in the 5th century until after the Renaissance in the 13th and 14th centuries. Medieval philosophy, understood as a project of independent philosophical inquiry, began in Baghdad, in the middle of the 8th century, and in France and Germany, in the itinerant court of Charlemagne in Aachen, in the last quarter of the 8th century. It is defined partly by the process of rediscovering the ancient culture developed in Greece and Rome during the Classical period, and partly by the need to address theological problems and to integrate sacred doctrine with secular learning. This is one of the defining characteristics in this time period. Understanding God was the focal point of study of the philosophers at that time, Muslim and Christian alike.
