Rafael Ferber

The book (1994, revised and enlarged 8th edition 2008) provides an introduction to six key concepts in philosophy – philosophy, language, knowledge, truth, being and good. At the same time, it aims to initiate its readers into the process of philosophical thinking. The book is addressed to students and laypeople, but also contains new ideas for specialists. It is written in a clear, accessible and engaging style, and its author ‘shares, and manages to convey, something of Plato's own commitment to philosophy’ (Phronesis).

The article uses Zeno’s metrical paradox of extension, or Zeno’s fundamental paradox, as a thought-model for the mind-body problem. With the help of this model, the distinction contained between mental and physical phenomena can be formulated as sharply as possible. I formulate Zeno’s fundamental paradox and give a sketch of four different solutions to it. Then I construct a mind-body paradox corresponding to the fundamental paradox. Through that, it becomes possible to copy the solutions to the fundamental paradox on the mind-body paradox. Three of them fail. But one of them – the Aristotelian one – gives us an interesting hint. Finally, this hint is pursued somewhat further and through comparison with Zeno’s fundamental paradox, the impossibility of a solution to the mind-body problem is shown again. The main new point of this article is the comparison of the mind-body problem with Zeno’s fundamental paradox. The article is a revised english version of an article published in: Allgemeine Zeitschrift für Philosophie, 23, 1998, p. 61-75.

Despite the fact that Aristotle and Frege/Russell differ in how to understand the ambiguity in the meaning of the word “is”, their theories share a common feature: “is” does not have a normative meaning. This paper, however, (I) shows (a) that there is a normative meaning of “is” (and correspondingly a constative meaning of the word “ought”) and (b) that the ambiguity of “is” is itself ambiguous. Furthermore, it proposes (c) a performative criterion for making a distinction between constative and normative “is”. Thereby, (II) a new interpretation of Kant’s critique of the ontological argument (CPR A 598/B626) makes sense: The difference between being as a real predicate and being as a position depends on the difference between “is” as a descriptive and “is” as a normative predicate. (III) The criterion also makes possible a new answer to Leibniz’s and Schelling’s question, “Why is there something rather than nothing?”: The “is” in “there is something” is normative and the question means “Why shall there be something rather than nothing?”. As “there shall be nothing” is self-refuting, the question evokes an ultimate foundation in a practical sense.

The article is the shortened English version of the article “Was und wie hat Sokrates gewusst?” Elenchos: Rivista di studi sul pensiero antico, 28, 5-39. First, it states a set of seven “knowledge-claims” made by Socrates: 1. There is a distinction between right opinion and knowledge. 2. Virtue is knowledge. 3. Nobody willingly does wrong. 4. To do injustice is the greatest evil for the wrongdoer himself. 5. An even greater evil is if the wrongdoer is not punished. 6. The just person is happy; the unjust person is unhappy. 7. The pleasant is not the good. These claims seem to be the “few” but “very important” things that Socrates claims to know. Second, it tries to answer the second question and defends the thesis that the supposed “knowledge” of Socrates is dianoetic, but not noetic. The main new idea of this paper is the comparison of the Socratic knowledge-claims with the upper states of the mind symbolized in the Divided Line, noesis and dianoia.

The article is the revised version of an inaugural lecture given at the University of Lucerne on 8 November 2001. In part (I), I give an interpretation of the first sentence of the Aristotelian Metaphysics: ‘All men desire by nature to know’. In part (II), I show how, for Aristotle, this desire to know constitutes a continuum from knowledge given by sense perception to knowledge of the first principles. In part (III), I compare this Aristotelian conception to Plato’s more ‘existentialist’ approach which implies the turning of a ‘whole soul’ rather than a continuum. Preferring the latter concep- tion, I conclude with some hints of what I plan to do in the next years and give a short overview of the history of universities in Europe and Switzerland, ending with the University of Lucerne.

In the whole Corpus Platonicum, we find in principle only one "direct argument" (Charles Kahn) for the existence of the ideas (Tim.51d3-51e6). The purpose of the article is to analyse this argument and to answer the question of why Plato in the Timaeus again defended the existence of the ideas despite the objections in the Parmenides. He defended it again because the latent presupposition of the apories in the Parmenides, the substantial view of sensibles, is removed through the introduction of space as "substantialized extension". First (I) it is shown that Plato remained in dialogues, like the Sophist and Politicus, faithful to the "theory of ideas" despite his criticism in the Parmenides. The common theme in the trilogy of the Theaetetus, Sophist and Politicus is to refute relativism by showing that any relativism presupposes something absolute that is something like the "theory of ideas". The second part of the paper (II) examines closely the logical structure of the argument for the existence of ideas in the Timaeus (51d3-52a7). The third part (III) shows how this argument can avoid the criticism of ideas in the Parmenides. In the Parmenides, sensibles are treated as substantial entities. But, as the Timaeus shows, sensibles are not substantial entities but merely qualities, namely qualities of space, which is the only substance in the sensible world. A shortened English version of the paper appeared in Proceedings of the Fourth Symposium Platonicum, Granada, Selected papers, ed. by T. Calvo/L. Brisson, Academia Verlag, St. Augustin, 1997, 179-186. But the only "direct argument" (Tim.51d3-51e6) seems to be interestingly flawed. Cf. Ferber, Rafael; Hiltbrunner, Thomas, (2005).

The article first gives an exegesis of the famous passage in the "Republic", 505d11-506a2. Attention is drawn to the fact that the principle that every soul does everything for the Good can be translated in two ways: Every soul does everything for the sake of the Good, or goes to all lengths for the sake of the Good. Depending on the different translations, we have a different picture of the platonic Socrates in the Republic, an intellectualistic Socrates for whom irrational desires do not exist, or a Socrates who also accepts irrational desires. The article favours the first one. Then it attempts to show that we can elucidate some dark points in the Socratic thesis that the Good is what every soul pursues and for which every soul does everything, with the help of Aquinas’s distinction between it actio hominis and actio humana. Finally, the article outlines three substantive answers to the question “What is the Good?” – the henological, the perfectionist and the structuralist. Instead of advancing a new answer, the article suggests an uncontroversial formal starting point for an answer to this question.

The first part of the paper (p. 10-21) tries to answer the first question of the title and describes a set of seven "knowledge-claims" made by Socrates: 1. There is a distinction between right opinion and knowledge.2. Virtue is knowledge. 3. Nobody does willingly wrong. 4. To do injustice is the greatest evil for the wrongdoer himself. 5. An even greater evil is if the wrongdoer is not punished. 6. The just man is happy; the unjust person is unhappy. 7. The pleasant is not the good. These claims seem to be the "few" (oliga) (Men. 98 b3) but "very important" (kallista) (Grg. 472 c8) things that Socrates claims to know. The second part (p. 22-39) tries to answer the second question and defends the thesis that the supposed "knowledge" of Socrates is dianoetic, but not noetic. The main new idea of this paper is the comparison of the Socratic "knowledge-claims" with the upper states of the mind symbolised in the Divided Line, noesis and dianoia (cf. R. 511 d7-e1).

The paper is the revised version of an inaugural lecture given as Lecturer (”Privatdozent”) at the University of Zurich on 3 june 1985. It deals with the beginning and the main properties of “the science of nature” (hê peri physeôs historiê) (Plato.Phd.96a). According to Themistius (DK 12 A 7), the founder of this kind of Ionic philosophy is Anaximander of Miletus because he was the rst who wrote about nature (especially a cosmography and a cosmogony) and developed three main principles of nature: (1) Nature has a mathematical structure (Arist. De coelo I3 295b10-14.32); (2) nature has a physical structure (DK 12 A 10-11); and (3) nature follows natural laws (DK 12 A 9). The origin of this introduction lies in the prolongation of primitive expectations of constancy. It is especially argued that the shift from mythos to logos is characterized by the depersonalization of nature and the introduction of proto-theoretical terms. In fact, the “apeiron” of Anaximander seems to be something similar to a theoretical term, because Anaximander seems to have realized that the explanans of nature cannot be one of its explananda, like water (Thales) or air (Anaximenes).

By the absolute Good, I understand the Idea of the Good; by the human goods, I understand pleasure and reason, which have been disqualified in Plato's "Republic" as candidates for the absolute Good (cf.R.505b-d). Concerning the Idea of the Good, we can distinguish a maximal and a minimal interpretation. After the minimal interpretation, the Idea of the Good is the absolute Good because there is no final cause beyond the Idea of the Good. After the maximal interpretation, the Idea of the Good is the One. The maximal and the minimal interpretation go beyond the textual evidence. I will defend two theses: (1) Since the platonic Socrates deliberately gives no more information, it seems wise to stop with Socrates and to give only a formal, not a substantive, interpretation: The absolute good is the third item between and above knowledge and the known. (2) To mediate between the absolute Good and the human goods, Plato’s Eleatic Stranger introduced in the "Politicus" and "Philebus" an intermediate principle: "the appropriate" (to metrion). For more information concerning "the appropriate" cf. Ferber, Rafael (2010). Plato's Side Suns: Beauty, Symmetry and Truth. Comments concerning semantic monism and pluralism of the "Good" in the Philebus (65A 1-5). Elenchos, 31, p. 51-76, esp. 64-67

The book (8th edition since 1994) provides an introduction to six key concepts in philosophy - philosophy, language, knowledge, truth, being and good. At the same time, it aims to initiate its readers into the process of philosophical thinking. The book is addressed to students and laypeople, but also contains new ideas for specialists. It is written in a clear, accessible and engaging style, and its author 'shares, and manages to convey, something of Plato's own commitment to philosophy' (Phronesis). An updated english translation appeared unter the title "Key Concepts in Philosophy", Academia Verlag, Philosophical Studies 50, St Augustin 2015.