Plato Republic:
>That the other citizens too must be sent to the task for which their natures were fitted, one man to one work, in order that each of them fulfilling his own function may be not many men, but one, and so the entire city may come to be not a multiplicity but a unity.
Plato Republic:
>For factions… are the outcome of injustice, and hatreds and internecine conflicts, but justice brings oneness of mind and love.
Plato Laws:
>That all men are, so far as possible, unanimous in the praise and blame they bestow, rejoicing and grieving at the same things, and that they honor with all their heart those laws which render the State as unified as possible
Thomas Hobbes
>The error concerning mixed government [constitutionalism] has proceeded from want of understanding of what is meant by this word body politic, and how it signifies not the concord, but the union of many men.
Aristotle Politics:
>Further, as a means to the end which he ascribes to the State, the scheme, taken literally is impracticable, and how we are to interpret it is nowhere precisely stated. I am speaking of the premise from which the argument of Socrates proceeds, "That the greater the unity of the State the better." Is it not obvious that a state at length attain such a degree of unity as to be no longer a State? since the nature of a State is to be plurality, and in tending to greater unity, from being a State, it becomes a Family, and from being a Family, an Individual; for the Family may be said to be more than the State, and the Individual than the family. So that we ought not to attain this greatest unity even if we could, for it would be the destruction of the State. Again, a State is not made up only of so many men, but of different kinds of men.
Aristotle Politics
>For the people becomes a monarch, and is many in one; and the many have the power in their hands, not as individuals, but collectively. Homer says that ‘it is not good to have a rule of many,’ but whether he means this corporate rule, or the rule of many individuals, is uncertain. At all events this sort of democracy, which is now a monarch and no longer under the control of law, seeks to exercise monarchical sway, and grows into a despot; the flatterer is held in honor; this sort of democracy being relatively to other democracies what tyranny is to other forms of monarchy. The spirit of both is the same, and they alike exercise a despotic rule over the better citizens.
See how Aristotle disapproves of Corporatism (while Plato praises it) b/c Aristotle doesn't think it is appropriate for the State to be a Monarch (or One Personhood); Aristotle says the nature of the State is more of a plurality, & criticized Plato on those lines; and also, Aristotle said that economical & political rule have a different science, and assigned monarchy to the household / economical role (which, in this context, is limited to their estate and not the State -- hence, "limited" & "constitutional" monarchy is not just obeying fundamental laws, but a view of monarchy that greatly diminishes it.
Aristotle writes in Politics,
>Now there is an erroneous opinion that a statesman, king, householder, and a master are the same, and that they differ, not in kind, but only in the number of their subjects. For example, the ruler over a few is called a master; over more, the manager of a household; over a still larger number, a statesman or king, as if there were no difference between a great household and a small state.
Aristotle:
>The rule of a household is a monarchy, for every house is under one head:
>whereas constitutional rule is a government of freemen and equals.
This is in response to Plato, & there are many instances like this that are troublesome for Monarchy.