1. Quantization of non-Abelian gauge theories
2. Non-perturbative modification of the Faddeev-Popov formula and banishment of the naive vacuum
3. It is well known today that the first Gribov region still contains gauge copies and that one should, in principle, restrict the integration over the gauge fields to the fundamental modular region defined as the set of the absolute minima of the functional ∫xAμa(x)Aμa(x) for every gauge orbit [3,66], but here we do not wish to enter the discussion about the possible effect that the restriction to the fundamental modular region, as opposed to the Gribov region, might have on the n-point functions [67,68].