Baptism does not profit a man outside unity with the Church ... For many heretics also possess this Sacrament but not the fruits of salvation ... The benefits which flow from Baptism are necessarily fruits which belong to the true Church alone. Children Baptized in other communions cease to be members of the Church when, after reaching the age of reason, they make formal profession of heresy, as, for example, by receiving communion in a non-Catholic Church.
Saint AugustineWhen people truly open their minds, and contemplate the way in which the universe is ordered and governed, they are amazed-overwhelmed by a sense of the miraculous. When people contemplate with open minds the germination of a single seed, they are equally overwhelmed-yet numerous babies are born every day, and no-one marvels. If only people opened their minds, they would see that the birth of a baby, in which a new life is created, is a greater miracle than restoring life.
Saint Augustine