 Aristotle |  Aristotle, General Topics: categories |  Berkeley, George |  Bolzano, Bernard |  Brentano, Franz |  Brouwer, Luitzen Egbertus Jan |  category theory |  change: and inconsistency |  Cusanus, Nicolaus [Nicolas of Cusa] |  Democritus |  Descartes, René |  Duns Scotus, John |  Epicurus |  Galileo Galilei |  geometry: finitism in |  Kant, Immanuel |  Kepler, Johannes |  Leibniz, Gottfried Wilhelm |  Leucippus |  logic: intuitionistic |  mathematics: constructive |  Newton, Isaac |  Ockham [Occam], William |  Parmenides |  Peirce, Charles Sanders |  Weyl, Hermann |  Zeno of Elea: Zeno’s paradoxes 