[2] As regards multiplication and fruitfulness within man's rational, this cannot be understood unless one knows about influx, regarding which the following may be said of it in general: Within everybody, as stated already, there is the internal man, the rational man, which is in the middle, and the external man. The internal man is the inmost part of him by virtue of which he is a human being and which makes him distinct and separate from animals, which do not possess that inmost part. The internal man is so to speak the door or entrance for the Lord, that is, for celestial and spiritual things that are the Lord's, to come into a person. What goes on there the individual cannot comprehend since it is entirely above his rational from which he thinks. To this inmost or internal man the rational which appears as the person's own is subordinate. Into this rational by way of that internal man flow heavenly things of love and faith from the Lord; and by way of this rational they flow on into the facts that belong to the external man. But how these things flowing in are received depends on the individual person's state.

[3] Unless the rational is submissive to goods and truths that are the Lord's this rational either stifles, or rejects, or perverts the things that flow in, the more so when they flow into facts in the memory that are derived from sensory evidence. These things when so received are meant by the seed that falls either on the pathway, or over stony ground, or among thorns, as the Lord teaches in Matt 13:3-7; Mark 4:3-7; Luke 8:5-7. But when the rational is submissive and believes the Lord, that is, His Word, the rational is like the ground or good soil into which the seed falls and bears much fruit.