► Curry (1954) "Remarks on the Definition and Nature of Mathematics"
► Hahn, Neurath & Carnap (2009) The Scientific Conception of the World
► Proietti & Sandu (2009) Fitch's Paradox and Ceteris Paribus Modalities
► Quine (1937) "New Foundations for Mathematical Logic"
► Introduction to Carnap (syllabus)
► Introduction to Carnap (preview of the first month)
► Martin-Löf (2012) Alfred Tarski Lectures (will scan & upload soon)
► Kolmogorov (1959) "On the Profession of a Mathematician" (Russian)