 Brentano, Franz |  Brouwer, Luitzen Egbertus Jan |  consciousness |  continuity and infinitesimals |  cosmology: methodological debates in the 1930s and 1940s |  Einstein, Albert: philosophy of science |  Fichte, Johann Gottlieb |  general relativity: early philosophical interpretations of |  geometry: epistemology of |  geometry: in the 19th century |  Gödel, Kurt |  Hilbert, David: program in the foundations of mathematics |  Husserl, Edmund |  Kant, Immanuel: views on space and time |  Leibniz, Gottfried Wilhelm: philosophy of physics |  Mach, Ernst |  mathematics, philosophy of: intuitionism |  mathematics: constructive |  Newton, Isaac: views on space, time, and motion |  Poincaré, Henri |  quantum mechanics |  quantum mechanics: Copenhagen interpretation of |  quantum mechanics: modal interpretations of |  quantum theory: and mathematical rigor |  quantum theory: identity and individuality in |  quantum theory: philosophical issues in |  quantum theory: quantum field theory |  quantum theory: quantum logic and probability theory |  quantum theory: the Einstein-Podolsky-Rosen argument in |  Schlick, Moritz |  space and time: absolute and relational space and motion, post-Newtonian theories |  space and time: inertial frames |  space and time: the hole argument 