Two Cultures Essays in Honour of David Speiser

Truesdell and the History of the Theory of Structures.- Reflections on Interdisciplinarianism.- The Sciences.- David Speiser’s Group Theory: From Stiefel’s Crystallographic Approach to Kac-Moody Algebras.- Whither Quantum Theory?.- The Direct Determination of the Induced Pseudoscalar Current (and About the Slow Metamorphosis of an Institution).- In Praise of Asymmetry.- An Observation About the Huygens Clock Problem.- The History of Science.- Daniel Bernoulli and Leonhard Euler on the Jetski.- On the Changing Fortune of the Newtonian Tradition in Mechanics.- Studies of Magnetism in the Correspondence of Daniel Bernoulli.- On Enriques’s Foundations of Mechanics.- On the Common Origin of Some of the Works on the Geometrical Interpretation of Complex Numbers.- The Arts.- Architecture and Music.- An Unusual Sacra Conversazione by Giovanni Bellini.- Ancient Astrological and Musical Analogies in The Renaissance: Palladio’s Villa Rotunda and a Geometric Construction by Leonardo.- Nuclear Arms.- The Gravest Danger: Nuclear Weapons And Their Proliferation.- Nuclear Arms Control.