All agree: no keeping of the precepts in the way ordered to salvation without special grace
The doctors of the Roman Church agree that without the help of special grace no one can keep God's precepts, wholly or in part, in the way that orders them to life and eternal salvation. That is, no one can keep them so that the keeping of itself advances his salvation and merits grace or glory for him.
Latin
VII. Porro Doctores Ecclesiae Romanae communi consensu agnoscunt neminem absque specialis gratiae auxilio posse praecepta divina observare, vel in totum, vel in parte, quoad modum illum quo ad vitam & salutem aeternam ordinantur: nempe, ita ut observatio ista sit aliquid quod ejus salutem per se promoveat, & gratiam vel gloriam ipsi promereatur.