<i>Logic, Language, and the Structure of Scientific Theories</i>, the second book in the Pittsburgh-Konstanz Series, marks the centennial of the births of Rudolf Carnap and Hans Reichenbach. Original essays by internationally distinguished scholars range from epistemology and philosophy of language to logic, semantics, the philosophy of physics and mathematics. In the realm of philosophy of physics it focuses upon such topics as space, time, and causality, which play fundamental roles in relativity theory and quantum mechanics.