This is not an introduction to physics but an analysis of its founda-
tions. Indeed, the aims of this book are: (1) to analyze the form and
content of some of the key ideas of physics; (2) to formulate several
basic physical theories in an explicit and orderly (i. e., axiomatic)
fashion; (3) to exhibit their presuppositions and discuss some of their
philosoph- ical implications; (4) to discuss some of the controversial
issues, and (5) to debunk certain dusty philosophical tenets that
obscure the under- standing of physics and hinder its progress. To the
extent to which these goals are attained, the volume can serve as a
companion to studies in theoretical physics aiming at deepening the
understanding of the logical structure and the physical meaning of our
science. In order to keep the book slender, whole fields of basic
physical research had to be excluded - chiefly many-body physics,
quantum field theories, and elementary particle theories. A large
coverage was believed to be less important than a comparatively detailed
analysis and reconstruction of three representative monuments: classical
mechan- ics, general relativity, and quantum mechanics, as well as their
usually unrecognized presuppositions. The reader is invited to join the
project and supply some of the many missing chapters - or to rewrite the
present ones entirely.