Are the electric charges of an electron and a proton equal or approximately equal?

Question

I read in Auletta's quantum mechanics (section 11.2) that the charge of the proton is, apart from the sign, approximately equal to that of the electron.. What bothers me is the word approximately, shouldn't $q_e=q_p$ because any small difference on the atomic scale will induce a huge electric charge for macroscopic bodies.