Thus the Father is the Fountain-head of the Son, and the Son is the outflowing of the Father; and the Father and Son pour forth the Spirit; and the Unity, which is the essence of the Fountain-head, is also the substance of the three Persons. But as to how the Three are One, this cannot be expressed in words, on account of the simplicity of that Abyss. Into this intellectual Where, the spirits of men made perfect soar and plunge themselves, now flying over infinite heights, now swimming in unfathomed depths, marvelling at the high and wonderful mysteries of the Godhead. Nevertheless, the spirit remains a spirit, and retains its nature, while it enjoys the vision of the Divine Persons, and abstracted from all occupation with things below contemplates with fixed gaze those stupendous mysteries. For what can be more marvellous than that simple Unity, into which the Trinity of the Persons merges itself, and in which all multiplicity ceases? For the outflowing of the Persons is always tending back into the Unity of the same essence, and all creatures, according to their ideal existence in God, are from eternity in this Unity, and have their life, knowledge, and essence in the eternal God; as it is said in the Gospel: "That which was made, was Life in Him."[42] This bare Unity is a dark silence and tranquil inactivity, which none can understand unless he is illuminated by the Unity itself, unmixed with any evil. Out of this shines forth hidden truth, free from all falsehood; and this truth is born from the unveiling of the veiled Divine purity; for after the revelation of these things, the spirit is at last unclothed of the dusky light which up till now has followed it, and in which it has hitherto seen things in an earthly way. Indeed, the spirit finds itself now changed and something very different from what it supposed itself to be according to its earlier light: even as St Paul says, "I, yet not I." Thus it is unclothed and simplified in the simplicity of the Divine essence, which shines upon all things in simple stillness. In this modeless mode of contemplation, the permanent distinction of the Persons, viewed as separate, is lost. For, as some teach, it is not the Person of the Father, taken by Himself, which produces bliss, nor the Person of the Son, taken by Himself, nor the Person of the Holy Ghost, taken by Himself; but the three Persons, dwelling together in the unity of the essence, confer bliss. And this is the natural essence of the Persons, which by grace gives the substance or essence to all their creatures, and it contains in itself the ideas of all things in their simple essence. Now since this ideal light subsists as Being, so all things subsist in it according to their essential being, not according to their accidental forms; and since it shines upon all things, its property is to subsist as light. Hence all things shine forth in this essence in interior stillness, without altering its simplicity.