Platonic Summer Seminar 2023: Preliminary Schedule
The seminar will focus on the study of Konrad Gaiser's Testimonia Platonica.
All times are CEST (Central European Summer Time). Online access via Cisco Webex at: https://5propartnersspzoo.my.webex.com/meet/platonicsummerseminar.

24.06 Opening of the Platonic Summer Seminar
19:00 Dinner
21:00 Campfire

25.06: History of the reconstruction of Plato's ἄγραφα δόγματα (Chair: Andrzej Serafin)
9:00 Breakfast
10:00 Seminar I: Ἄγραφα δόγματα before Gaiser: history of reconstruction
12:00 Seminar II: Exclusion of Plato's περὶ τἀγαθοῦ from Corpus Platonicum
14:00 Lunch
15:00 Seminar III: Gaiser's hypothesis of Plato's Esotericism
17:00 Lecture: Laurence Lampert, "Platonic Esotericism"
19:00 Dinner
Reading: Gaiser, "Plato's Enigmatic Lecture On the Good"
Brisson, "Premises, Consequences, and Legacy of an Esotericist Interpretation of Plato"
Additional Reading: Gaiser, "Platons esoterische Lehre"
Melzer, "A Chronological Compilation of Testimonial Evidence for Esotericism"
Szlezák, "Six Philosophers on Philosophical Esotericism"
Boas, "Ancient Testimony to Secret Doctrines"
Lampert, "Strauss’s Recovery of Exotericism"

26.06: Organization of the Academy; Oral Platonism (Chair: Michał Bizoń)
9:00 Breakfast
10:00 Seminar I: Plato’s Seventh Letter
12:00 Seminar II: Orality and Criticism of Writing
14:00 Lunch
15:00 Seminar III: Orality in the Early Academy
17:00 Lecture: Seweryn Blandzi, "Platon i problem mechanizmu generowania"
19:00 Dinner
Reading: Testimonia Platonica Section A I-IV (1-21); Phaedrus 274b-279c; Ep. VII 341a3-342a6, 342a7-344d2
Additional Reading: Vlastos, "On Plato's Oral Doctrine"
Krämer, "Gegen Gregory Vlastos"
Richard, "Le platonisme oral"
Ong, "Orality and Literacy"
Havelock, "The Oral Sources of the Hellenic Intelligence"
Szlezák, "Notes sur le débat autour de la philosophie orale de Platon"

27.06: General reports on Plato's doctrine (Chair: Łukasz Perlikowski)
9:00 Breakfast
10:00 Seminar I: The identity of the One and the Good
12:00 Seminar II: The Dyad as primordial matter
14:00 Lunch
15:00 Seminar III: TP 32 as the paradigm for Gaiser's "Testimonia Platonica"
17:00 Lecture: Giuseppe Girgenti, "Giovanni Reale’s Milanese School’s Contribution to the Tübingen School Research on Plato’s Unwritten Doctrines"
19:00 Dinner
Reading: Testimonia Platonica Section B I (TP 22-32)
Additional Reading: Gomperz, "Plato's System of Philosophy"
Cherniss, "Plato's Lectures: A Hypothesis for an Enigma"
Gaiser, "Plato's enigmatic lecture On the Good"
Whitehead, "Mathematics and the Good"

28.06: Mathematical foundations of Platonic ontology (Chair: Rafał Katamay)
9:00 Breakfast
10:00 Seminar I: The relation between principles, numbers and phenomena
12:00 Seminar II: καθ’ αυτό, πρός τι and other opposites
14:00 Lunch
15:00 Seminar III: The relation between numbers and ideas
17:00 Remote Lecture: Vincenzo Cicero, "The Platonic analogization of mathematics and ontology according to Gaiser"
19:00 Dinner
Reading: Testimonia Platonica Section B II 1 (TP 33-48)
Ross, "Plato's Theory of Ideas", ch. XII-XVI
Additional Reading: Klein, "The Concept of Number in Greek Mathematics and Philosophy"
Klein, "The Ontological Conception of the ἀριθμοί in Plato"
Hösle, “On Plato's Philosophy of Numbers and Its Mathematical and Philosophical Significance”
Guthrie, "Plato's Unwritten Metaphysics"

29.06: Theory of Principles and Apophatics (Chair: Piotr Prokopowicz)
9:00 Breakfast
10:00 Seminar I: One and Many as the foundation of Forms; Aristotle's criticism of Plato's One
12:00 Seminar II: One and Many as the foundation of Universal Science
14:00 Lunch
15:00 Remote Lecture: Lloyd Gerson on the doctrine of principles in Plato's dialogues
17:00 Lecture: William Franke, "Taking Letters Literally and Figuring the Unsayable: Plato’s Apophatic Legacy"
19:00 Dinner
Reading: Testimonia Platonica Section B II 2 (TP 49-55)
Krämer, "Plato and the Foundations of Metaphysics"
Annas, "Forms and First Principles"
Halper, "One and Many in Aristotle's Metaphysics"	
Additional Reading: Halfwassen, "Monism and Dualism in Plato’s Doctrine of Principles"
Theiler, "Einheit und unbegrenzte Zweiheit von Plato bis Plotin"
Dörrie, "Die Lehre von den Prinzipien", in: "Der Platonismus in der Antike", Bd. IV

30.06:  Ideal Numbers and Pythagoreanism (Chair: Marek Sławiński)
9:00 Breakfast
10:00 Seminar I: What are ideal numbers?
12:00 Seminar II: What are ideal numbers? (cont.)
14:00 Lunch
15:00 Remote Lecture: Edward C. Halper on Plato’s Principles of Mathematics
17:00 Remote Lecture: Janina Gajda-Krynicka, "Pitagorejski rodowod platonskich tzw. nauk niepisanych"
19:00 Dinner
Reading: Testimonia Platonica Section B II 3 ab (TP 56-65); Aristotle, Met. M 6-9; Plato, Soph. 243d-256c
Additional Reading: Klein, "Greek Mathematical Thought and the Origin of Algebra", part I, Ch. 7c-8
Cook-Wilson, "On the Platonist Doctrine of the ἀσύμβλητοι ἀριθμοί"
Hopkins, "The Origin of the Logic of Symbolic Mathematics", Ch. 19
Stenzel, "Zahl und Gestalt", ch. III.2
Burkert, "Platonic and Pythagorean Number Theory"
Burnet, "The Philosophy of Numbers"
Taylor, "Forms and Numbers"
Cohen, "Platons Ideenlehre und die Mathematik"

1.07: Psychology, Ontology, Henology (Chair: Justyna Horbowska)
9:00 Breakfast
10:00 Seminar I: Ontological implication of Platonic dialectics
12:00 Seminar II: Religious context of Plato's monism/dualism
14:00 Lunch
15:00 Lecture: Paolo Di Leo, "Schürmann’s interpretation of Plotinus’ One"
17:00 Farewell
Reading: Testimonia Platonica Section B II 3 cde (TP 66-72)
Additional Reading: Bianchi, "Themes of religious dualism"
Armstrong, "Dualism: Platonic, Gnostic and Christian"
De Vogel, "A note on Plato's so-called cosmic dualism and on the visible world as an image of the eternal Glory"
Bos, "Aristotelian and Platonic Dualism"
Eliade, "Prolegomenon to Religious Dualism"
Szlezák, "Psyche-Polis-Kosmos"
Schürmann, "Neoplatonic Henology as an Overcoming of Metaphysics"

Outline of Konrad Gaiser's Testimonia Platonica: