Proslogion

THIS good thou art, thou, God the Father; this is thy Word, that is, thy Son. For nothing, other than what thou art, or greater or less than thou, can be in the Word by which thou dost express thyself; for thy Word is true, as thou art truthful. And, hence, it is truth itself, just as thou art; no other truth than thou; and thou art of so simple a nature, that of thee nothing can be born other than what thou art. This very good is the one love common to thee and to thy Son, that is, the Holy Spirit proceeding from both. For this love is not unequal to thee or to thy Son; seeing that thou dost love thyself and him, and he, thee and himself, to the whole extent of thy being and his. Nor is there aught else proceeding from thee and from him, which is not unequal to thee and to him. Nor can anything proceed from the supreme simplicity, other than what this, from which it proceeds, is.

But what each is, separately, this is all the Trinity at once, Father, Son, and Holy Spirit; seeing that each separately is none other than the supremely simple unity, and the supremely unitary simplicity which can neither be multiplied nor varied. Moreover, there is a single necessary Being. Now, this is that single, necessary Being, in which is every good; nay, which is every good, and a single entire good, and the only good.