Four principles for quantum gravity Lee Smolin (Submitted on 6 Oct 2016) Four principles are proposed to underlie the quantum theory of gravity. We show that these suffice to recover the Einstein equations. We also suggest that MOND results from a modification of the classical equivalence principle, due to quantum gravity effects. Comments: 26 pages, one figure and caption taken from McGaugh, Lelli, Schombert, arXiv:1609.05917v1 Subjects: General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th) Cite as: arXiv:1610.01968 [gr-qc] (or arXiv:1610.01968v1 [gr-qc] for this version) MOND can explain most of the effects attributed to dark matter, and Smolin is proposing that a general feature of a QG is MOND like effects due to QG. in effect Smolin is providing a quantum basis for an empirical curve-fit.