The article gathers five new autographed testimonies from Kant’s life: a dedication copy to Hasse, a fragment on plagiarism, a letter of office from the second rectorate (1788), and two album-amicorum entries with a Persius quotation via Alexander Pope.

It is shown that the famous quote from Fontenelle in Kant’s Critique of Practical Reason, “I bow before an eminent man, but my spirit does not bow,” comes from the book On Principles of Morality, written by Abbé Mably. The Fontenelle quote is found in a review of this very book in the Allgemeine Literaturzeitung (No. 21, 1785). This review should further be considered Kant’s source.

An unrecognised copy (1665) in Kant’s private library of Michael Piccart’s Isagoge (1605), an introduction to the system of Aristotelian philosophy together with Kant’s own remarks on this author (Refl 4160, AA 17, p. 439) can be established as an original source for the Kantian ‘ideosphere’. First, I point out contexts and consequences of Piccart’s Altdorfian Aristotelianism, in contrast to the Königsbergian Aristotelianism (emphasised by Tonelli’s research). To further check the quality of Piccart as a source of Kant’s, a conceptual (...) case-study is elaborated with Kant’s critical distinction between analytics as a “logic of truth” (KrV, B 85) and dialectics as a “logic of illusion” (KrV, B 86). Hereby, dialectics is understood as part of an Aristotelian division of logic in analytics, dialectics and sophistics (Königsberg/Rabe versus Altdorf/Piccart). As will be shown by the paradigmatic case of the famous Königsbergian proponent of Aristotelianism, Paul Rabe, Kant cannot have received the suggestion for his own critical distinction from Rabe’s Cursus Philosophicus. Instead, Piccart refers to a passage of Aristotle’s Metaphysics, which suggests the very distinction between an analytic philosopher who searches for scientific truth and dialecticians and sophists. For different reasons, they do not claim any scientific seriousness. (shrink)

In his Treatise on the Figure of the Stars (1732), Maupertuis described bright and elliptic phenomena in the night sky. Based on Maupertuis’s account of these astronomical observations, Kant developed an explanation of his own in his early book on the Universal Natural History and Theory of the Heavens (1755). For him, these figures were seemingly stars, suns and even whole galaxies, subsystems orbiting a central body or a central sun, held by Kant to be the middle of the universe (...) and a whole, an immense and immeasurable system of many uncountable solar systems. Since Kant did not read Maupertuis’s treatise, he derived his knowledge from a review of the Collected Essays of Maupertuis, in which the Treatise was published (1744). This review appeared in the Nova Acta Eruditorum in April 1745. Alongside this known source, another possible and complementary source on Maupertuis’s theory may have influenced Kant in his thinking: Gottsched’s philosophical textbook First Elements of all Philosophical Disciplines (5th edition, Theoretical part, Vol. I, 1748). The plate beneath the front matter of this book shows a picture of many solar systems. It depicts in detail, and according to Maupertuis’s account, comets signifying the center of different solar systems by the alignment of their tails, pointing in the opposite direction of the center. Gottsched’s book was known to Kant, who mentioned it in at least three lectures on logic. In addition, it was widely read in Königsberg’s intellectual and academic circles, since Gottsched was born not far from Königsberg and was a friend of Knutzen, Flottwell, Scheffner, the Imperial Countess of Keyserlingk, and others. (shrink)

Recently (2019/20), a new autograph written by Immanuel Kant in October 1786 was found and identified. It is a quotation from Horace’s Epistles I. 1, 60 dedicated to Johann Friedrich Lange (1760–1826), a preacher and former student of Kant’s at the Albertina University: “Let this be a man’s brazen wall (rule of life), to be conscious of no ill, to turn pale with no guilt.” Kant quoted the passage several times; one time in his MS. Horace was one of Kant’s (...) favorite Latin poets. (shrink)

This miscellany reports on a newly found dedication copy of Kant’s Religion within the Boundaries of mere Reason (1793) to his dear friend and former student Carl Gottlieb Fischer.

A well-known argument by Wittgenstein can naturally be expanded to provide additional information on the logic of folk psychological concepts. Exemplary for this is the concept of pain. Even the concept of one's own pain – and related: the use of the sentence "I am in pain" – turns out to be quite complex; it is the result of a two-stage construction. Ordinary descriptive use of the sentence at an upper level is based on non-descriptive, expressive use of the sentence (...) at a lower level. But the higher level is only achieved if the concept of someone else's pain is available. (shrink)

It is shown that the famous quote from Fontenelle in Kant’s Critique of Practical Reason, “I bow before an eminent man, but my spirit does not bow,” comes from the book On Principles of Morality, written by Abbé Mably. The Fontenelle quote is found in a review of this very book in the Allgemeine Literaturzeitung (No. 21, 1785). This review should further be considered Kant’s source.