Part I. Reflections on the Pursuit of Physics -- E. pluribus boojum: the physicist as neologist -- Commencement address, St. Johns College, Santa Fe, May 18, 1986 -- One of the great physicists ... and great characters -- My life with Landau -- What's wrong with this Lagrangean? -- What's wrong with this library? -- What's wrong with this prose? -- What's wrong with these equations? -- What's wrong with these prizes? -- Part II. The Quantum Theory -- Quantum mysteries for anyone -- Can you help your team tonight by watching on TV? -- Spooky actions at a distance: mysteries of the quantum -- A bolt from the blue: The Einstein-Podolsky-Rosen paradox -- The philosophical writings of Neils Bohr -- The great quantum muddle -- What's wrong with this pillow? -- Part III. Relativity -- Cruel nature: a relativistic tragicomedy -- The amazing many coloured relativity engine -- Relativistic addition of velocities directly from the constancy of the velocity of light -- Relativity without light -- E = Mc2 (written with M.J. Feigenbaum) Part IV Mathematical Musings -- Logarithms! -- Stirling's formula! -- Pi in the sky -- Variational principles in dynamics and quantum theory -- Special functions: a group theoretic approach.