III. But this apportionment of functions does not mar the Unity of the Trinity
If, therefore, under guiding grace, dearly-beloved, we faithfully and wisely understand what is the particular work of the Father, of the Son, and of the Holy Ghost, and what is common to the Three in our restoration, we shall without doubt so accept what has been wrought for us by humiliation and in the body as to think nothing unworthy about the One and Selfsame Glory of the Trinity. For although no mind is competent to think, no tongue to speak about God, yet whatever that is which the human intellect apprehends about the essence of the Father's Godhead, unless one and the selfsame truth is held concerning His Only-begotten or the Holy Spirit, our meditations are disloyal, and beclouded by the intrusions of the flesh, and even that is lost, which seemed a right conclusion concerning the Father, because the whole Trinity is forsaken, if the Unity therein is not maintained; and That Which is different by any inequality can in no true sense be One.
Source: Sermons (New Advent)