The theory of relativity

• Niels Bohr sees both continuity and discontinuity between relativity theory and quantum physics.[^1] He often uses relativity theory as a foil to illustrate the “epistemological lesson” of quantum physics — and his discussions show that he has an interesting take on how to understand relativity theory itself.

• “You are certainly right that Einstein is not consequent [consistent] when speaking of the ideal of detached observer and neglecting his own wisdom of relativity, which Eddington poetically described by the picture of how long man traced a footprint in the sand until he recognized that it was his own.” (Bohr to Pauli, March 25, 1955)