Quantum Theory Quotes

“A field is an entity spread out in space and time. It is, therefore, an entity that has an intrinsically wavelike character. Applying quantum theory to the field results in its physical quantities (such as energy and momentum) becoming present in discrete, countable packets (quanta). But such countability is just what we associate with particlelike behaviour. In studying a quantum field, therefore, we are investigating and understanding an entity that explicitly exhibits both wavelike and particlelike properties in as clear a manner as possible.”
― John C. Polkinghorne, Quantum Theory: A Very Short Introduction

“As Bohr grew older he became increasingly concerned with philosophical issues. He was undoubtedly a very great physicist, but it seems to me that he was distinctly less gifted at this later avocation. His thoughts were extensive and cloudy, and many books have subsequently been written attempting to analyse them, with conclusions that have assigned to Bohr a variety of mutually incompatible philosophical positions. Perhaps he would not have been surprised at this, for he liked to say that there was a complementarity between being able to say something clearly and its being something deep and worth saying.”
― John C. Polkinghorne, Quantum Theory: A Very Short Introduction

“incandescent”
― John C. Polkinghorne, Quantum Theory: A Very Short Introduction