"Nevertheless, all of us who work in quantum physics believe in the reality of a quantum world, and the reality of quantum entities like protons and electrons"

This quote by John Polkinghorne talks to the belief of those who work in quantum physics. It recommends that regardless of the complexities of the quantum world, those who operate in the field trust its truth. This reality includes the existence of quantum entities such as protons and electrons. This quote suggests that the quantum world is not simply a theoretical principle, but a concrete reality that can be studied and checked out. It also recommends that the quantum world is composed of real particles and forces that can be observed and determined. This quote is a testimony to the dedication and commitment of those who operate in quantum physics, and their belief in the reality of the quantum world.