As far as possible I have utilised the existing logical terminology. But substantialism has notions which require special technical words, and I have not hesitated to invent such when necessary. On the other hand, I have rejected the latinisms of current logic, which have never been assimilated by modern languages. The English language is good enough for all the purposes of logic. [Footnote 1: The mental substance is the _fifth essence_ of the initiate Greeks and of Alchemists. They also called it _chaos_ and _first matter_. 'Man was made of that very matter and chaos whereof all the world was made, and all the creatures in it: which is a most high mystery to understand, and must, nay is altogether necessary to be known of him that expecteth good from this art, being the ground of the wisdom thereof. Foolish men, nay they that the world holds for great doctors, say and tell it for truth, that God made man of a piece of mud, or clay, or dust of the earth, which is false; it was no such matter, but a Quintessential Matter which is called earth, but is no earth.'--_De Manna Benedicto._] [Footnote 2: See Stricker's _Manual of Histology_; _Bioplasm_, and other works, by Dr. Lionel S. Beale, M.B., F.R.S.; and an article on the New Psychology, by A. Fouillé, in the _Revue des Deux Mondes_ for October 15th, 1891.] INTELLECT IV--ITS ORIGIN AND FUNCTION The mind has at physical birth one uniform quality of plasma and consciousness. By education and experience a portion of the plasma is gradually changed, and the consciousness excited by this portion is what we call INTELLECT. The word may also stand for the plasma so differentiated. The consciousness pertaining to the plasma left in its primitive state is SENTIMENT, which generally corresponds to what is termed the moral nature of man. Intellect is a temporary condition arising out of the need to preserve the Self from hostile and inharmonious surroundings. The adaptation is artificial, and may therefore be well-done, or ill-done, or over-done. It is over-done when too much of the plasma and mental energy is devoted to intellectual purposes--when the individual has, to use a common expression, more head than heart. In this case the end is sacrificed to the means.