Of God and His Creatures  St Augustine here, as his manner is,
says things which remain difficult after all explanations given.
He finds some analogy to the Blessed Trinity in the human soul
thus: "The mind itself and its love and knowledge of itself are
three things; and these three are one; and when they are
perfect, they are equal." This thought he pursues, De Trinitate
IX, Chapp. iii, iv: X, Chapp. iii-x. It makes to his purpose to
insist on the equality of the soul's knowledge of itself to the
soul as known. "When it knows its whole self, and nothing else
with itself, then its knowledge is equal to itself" (De Trin.
IX, iv). He frequently repeats that the soul knows its whole
self. See especially X, iv, 6. St Thomas would explain: The soul
knows its whole self in existence (quod est), but not its whole
self in essence (quid est): which is true, but what St Augustine
meant is not so clear. Cf. De Trin. X, x, 16: "In no way is a
thing rightly said to be known, while its substance is unknown:
wherefore, whe