Nature is the Poetry of Mind
Axiomatic Method and Category Theory
Goethe's theory of color and scientific intuition
What is elementary geometry
A mad day's work
Proof of Soul Theorem
Influencia de Goethe en Schelling
An examination on counterexaples in Proofs and Refutations
The Evolution of Group Theory: A Brief Survey
Tarski’s system of geometry and betweenness geometry with the group of movements
Einstein, Felix Klein, David Hilbert y Hermann Weyl
Felix Klein and His Erlanger Programm
The heritage of S. Lie and F. Klein: Geometry via transformation groups
Goethe, Husserl, and the Crisis
Goethe and the Poetics of Science
On Klein’s icosahedral solution of the quintic
Carlo Michelstaedter: Persuasion and Rhetoric
Genius and Biographers: The Fictionalization of Evariste Galois