Metaphysics

Hilary Putnam Hilary Whitehall Putnam was one of the most versatile and intellectually honest philosophers of the twentieth century. Over a career spanning six decades, mostly at Harvard, Putnam pursued an unusual philosophical itinerary: he defended positions that he later criticised with the same energy with which he had established them. He was a functionalist and then rejected functionalism; a scientific realist and then proposed “internal realism”; a sympathiser with logical positivism and then its critic. This willingness for self-criticism is one of the hallmarks of his philosophical style. ...

Joseph Maréchal was a Belgian Jesuit philosopher and psychologist, founder of Transcendental Thomism — a movement that undertook a synthesis between Thomistic metaphysics and Kant’s critical philosophy. His work marks a decisive moment in the renewal of Scholasticism in the 20th century and exerted profound influence on figures such as Karl Rahner and Bernard Lonergan. Key Concepts The Starting Point of Metaphysics (Le Point de départ de la Métaphysique, 5 notebooks, 1922–1947): His principal work. Maréchal traces the history of epistemology — from Greek philosophy through Kantianism — to ground Thomistic metaphysics in the face of Kantian critique. Notebook V (“Thomism Confronting Critical Philosophy”) is the most discussed. ...

Laozi (老子) Essential historical note: The existence of Laozi as an individual historical figure is debated among specialists. The historian Sima Qian (c. 145–86 BCE), in the Shiji, records several traditions about Laozi without being able to decide between them — an indication that the uncertainty is ancient. The text attributed to him, the Dàodéjīng (道德經, “Classic of the Way and Virtue”, also called the Laozi), may be a compilation of material from different sources; modern scholarship places the current form of the text in the 4th or 3rd century BCE. The figure of Laozi as an ancient sage who supposedly met Confucius and then left China westward is probably legendary. ...

Mário Ferreira dos Santos Mário Ferreira dos Santos was the most prolific Brazilian philosopher of the 20th century, author of more than fifty works seeking to build a comprehensive philosophical system — known as Concrete Philosophy — synthesising the classical Western tradition (especially Pythagoreanism, Aristotle, and Scholasticism) with original contributions in ontology, mathematics, symbolism, and theory of knowledge. Key Concepts Concrete Philosophy: The name Ferreira dos Santos gave to his systematic project. It stands opposed both to the abstract logicism of the analytic tradition and to existentialist subjectivism. The “concrete” is reality considered in the fullness of its determinations — neither raw empirical data nor pure abstraction, but the dialectical synthesis of both. ...

Plato Student of Socrates and the most influential philosopher of antiquity, Plato was born into an aristocratic Athenian family around 428 BCE. His master’s execution in 399 BCE marked him deeply and turned him away from the political career his lineage had reserved for him. After years of travel — which tradition links to contact with the Pythagoreans of southern Italy and to his failed attempts to educate the tyrants of Syracuse — he founded the Academy around 387 BCE, the first institution of higher learning in the West, which would endure for more than nine centuries. His work has reached us almost intact, almost entirely in the form of dialogues, with Socrates as the central character. ...

Plotinus Born around 205 CE, probably in Roman Egypt, Plotinus studied for years in Alexandria under the enigmatic master Ammonius Saccas and later settled in Rome, where he founded a school and led a life of remarkable asceticism. His lessons were gathered and organized by his disciple Porphyry in the Enneads. He is the founder of Neoplatonism and the greatest philosopher of late antiquity, making Plato the starting point of one of the most grandiose metaphysics ever conceived. ...

Proclus Proclus Lycaeus Diadochus (in Greek Próklos Lýkios Diádokhos, “Proclus the Lycian, the Successor”) was born in Constantinople in 412 CE and died in Athens on 17 April 485 CE. A caveat: he should not be confused with Proclus Procopius (an orator of the 5th century) or other homonymous late-antique figures. The son of a wealthy family from Lycia (in the south of present-day Turkey), he was educated in Alexandria and soon moved to Athens, where he studied with Plutarch of Athens (not to be confused with the essayist of Chaeronea) and with Syrianus, whom he succeeded as head of the Academy — hence his title Diádokhos, “the Successor.” He was the last great systematizer of pagan Neoplatonism before the closure of the Academy by Emperor Justinian in 529 CE. His work organizes the Plotinian inheritance into a rigorous network of propositions and triads, in a project comparable, in ambition, to Aquinas’s Summa — but in an entirely pagan key. ...

Saul Kripke Saul Aaron Kripke was arguably the most technically gifted analytic philosopher of his generation. Born in Omaha, Nebraska, he showed extraordinary aptitude from adolescence: he published his first mature logical article — a completeness proof for modal logic — at seventeen, and corresponded with professional logicians while still in high school. A professor at Princeton and later at the CUNY Graduate Center, Kripke transformed metaphysics, philosophy of language, and modal logic to such a degree that virtually all analytic philosophy after the debates surrounding Naming and Necessity is, in some sense, a response to him. ...

Vladímir Soloviov Vladimir Sergeyevich Solovyov (28 January 1853, Moscow — 13 August 1900, the Uzkoye estate near Moscow) was a philosopher, theologian, poet, and critic — the first Russian thinker to build a comprehensive metaphysical system and the founder of the tradition of Russian religious philosophy. The son of the great historian Sergei Solovyov, he was a friend of Dostoevsky and a central figure in the intellectual life of his time. His work cast its shadow over the entire following generation — from Berdyaev and Bulgakov to Russian poetic Symbolism. ...

Note on sources and authorship: The dates of Zhuangzi (莊子, “Master Zhuang”; personal name Zhōu 周) are uncertain — c. 369–286 BCE is the conventional scholarly estimate, derived from mentions in period texts. The eponymous text Zhuangzi (莊子), as transmitted to us, is a compilation in three sections: the 7 inner chapters (nèipiān 內篇), generally attributed to Zhuangzi himself by modern scholarship; the 15 outer chapters (wàipiān 外篇) and the 11 miscellaneous chapters (zápiān 雜篇), regarded as works by later disciples and commentators. The edition that reached modernity is due to the scholar Guo Xiang (c. 252–312 CE). ...