Every soul that is born into flesh is soiled by the filth of wickedness and sin. . . . In the Church, baptism is given for the remission of sins, and, according to the usage of the Church, baptism is given even to infants. If there were nothing in infants which required the remission of sins and nothing in them pertinent to forgiveness, the grace of baptism would seem superfluous
OrigenHe who is anxious to attain a true understanding of holy Scripture, will discover the spiritual truths which are spoken by it to those who are called "spiritual," by comparing the meaning of what is addressed to those of weaker mind with what is announced to such as are of acuter understanding, both meanings being frequently found in the same passage by him who is capable of comprehending it.
OrigenBut God, who is the beginning of all things, is not to be regarded as a composite being, lest perchance there should be found to exist elements prior to the beginning itself, out of which everything is composed, whatever that be which is called composite.
Origen