6. To begin with, from among the young those are to be selected in whom the Most High has sown the seeds of a vocation. We are aware that, thanks to your wise recommendations, in many dioceses of France the priests of the different parishes, especially in country districts, apply themselves with a zeal and self-sacrifice which we cannot sufficiently praise in guiding themselves the studies of children in whom they have observed a marked tendency to piety and an aptitude for intellectual work. The presbyteral schools are thus the first step, as it were, of the stairs which from the junior to the senior seminaries carry up to the priesthood those young men to whom the Saviour repeats the appeal He addressed to Peter and Andrew, to John and James, "Leave your nets; follow Me, I will make you fishers of men."⁴