78. Wisdom is described by 'the river in the garden', from which came 'four rivers'. The first of these is good and truth; the second is the knowledge of all things constituting good and truth, that is, constituting love and faith, which belong to the internal man; the third is reason, and the fourth knowledge, which belong to the external man. All of these derive from wisdom, which in turn stems from love to the Lord and faith in Him, verses 10-14.