Here is a .pdf of an accessible sample of ET Jaynes‘ writing. ET Jaynes (1989) Clearing Up the Mysteries. Note that Jaynes’ magnum opus is Probability Theory: The Logic of Science.
Abstract: We show how the character of a scientic theory depends on one’s attitude toward probability. Many circumstances seem mysterious or paradoxical to one who thinks that probabilities are real physical properties existing in Nature. But when we adopt the “Bayesian Inference” viewpoint of Harold Jeffreys, paradoxes often become simple platitudes and we have a more powerful tool for useful calculations. This is illustrated by three examples from widely different fields: diffusion in kinetic theory, the Einstein-Podolsky-Rosen (EPR) paradox in quantum theory, and the second law of thermodynamics in biology.
It is a talk at Cambridge in honor of Harold Jeffreys, for whom the Jeffreys prior is named.