Its intricate machinery, such as its systems of representation, its methods of voting, the appointment of its speaker, and the legal formalities required in the recording of its decrees, are things accidental only; or if they are necessary, they are necessary only in a secondary way.
But the picture of the Church thus far is only half drawn.

She is all this, but she is something more than this.

She is not only the parliament of spiritual man, but she is such a parliament guided by the Spirit of God.

The work of that Spirit may be secret, and to the natural eyes untraceable, as the work of the human will is in the human brain.
But none the less it is there.
_Totam infusa per artus Mens agitat molem, et magno se corpore miscet._ The analogy of the human brain is here of great help to us.

The human brain is an arrangement of material particles which can become connected with consciousness only in virtue of such a special arrangement.