"For as in this disease, there is an unnatural spirit, or wind in the head that obstructeth the roots of the nerves, and moving them violently, taketh away the motion which naturally they should have from the power of the soul in the brain, and thereby causeth violent, and irregular motions (which men call convulsions) in the parts; insomuch as he that is seized therewith, falleth down sometimes into the water, and sometimes into the fire, as a man deprived of his senses; so also in the body politic, when the spiritual power, moveth the members of a commonwealth, by the terror of punishments, and hope of rewards (which are the nerves of it,) otherwise than by the civil power (which is the soul of the commonwealth), they ought to be moved; and by strange, and hard words suffocates their understanding, it must needs thereby distract the people, and either overwhelm the commonwealth with oppression, or cast it into the fire of a civil war."
— Hobbes, Thomas (1588-1679)
Metaphor
"For as in this disease, there is an unnatural spirit, or wind in the head that obstructeth the roots of the nerves, and moving them violently, taketh away the motion which naturally they should have from the power of the soul in the brain, and thereby causeth violent, and irregular motions (which men call convulsions) in the parts; insomuch as he that is seized therewith, falleth down sometimes into the water, and sometimes into the fire, as a man deprived of his senses; so also in the body politic, when the spiritual power, moveth the members of a commonwealth, by the terror of punishments, and hope of rewards (which are the nerves of it,) otherwise than by the civil power (which is the soul of the commonwealth), they ought to be moved; and by strange, and hard words suffocates their understanding, it must needs thereby distract the people, and either overwhelm the commonwealth with oppression, or cast it into the fire of a civil war."
Metaphor in Context
As there have been doctors, that hold there be three souls in a man; so there be also that think there may be more souls, (that is, more sovereigns,) than one, in a commonwealth; and set up a supremacy against the sovereignty; canons against laws; and a ghostly authority against the civil; working on men's minds, with words and distinctions, that of themselves signify nothing, but bewray (by their obscurity) that there walketh (as some think invisibly) another kingdom, as it were a kingdom of fairies, in the dark. Now seeing it is manifest, that the civil power, and the power of the commonwealth is the same thing; and that supremacy, and the power of making canons, and granting faculties, implieth a commonwealth; it followeth, that where one is sovereign, another supreme; where one can make laws, and another make canons; there must needs be two commonwealths, of one and the same subjects; which is a kingdom divided in itself, and cannot stand. For notwithstanding the insignificant distinction of temporal, and ghostly, they are still two kingdoms, and every subject is subject to two masters. For seeing the ghostly power challengeth the right to declare what is sin it challengeth by consequence to declare what is law, (sin being nothing but the transgression of the law;) and again, the civil power challenging to declare what is law, every subject must obey two masters, who both will have their commands be observed as law; which is impossible. Or, if it be but one kingdom, either the civil, which is the power of the commonwealth, must be subordinate to the ghostly, and then there is no sovereignty but the ghostly; or the ghostly must be subordinate to the temporal, and then there is no supremacy but the temporal. When therefore these two powers oppose one another, the commonwealth cannot but be in great danger of civil war, and dissolution. For the civil authority being more visible, and standing in the clearer light of natural reason, cannot choose but draw to it in all times a very considerable part of the people: and the spiritual, though it stand in the darkness of School distinctions, and hard words; yet because the fear of darkness, and ghosts, is greater than other fears, cannot want a party sufficient to trouble, and sometimes to destroy a commonwealth, and this is a disease which not unfitly may be compared to the epilepsy, or falling sickness (which the Jews took to be one kind of possession by spirits) in the body natural. For as in this disease, there is an unnatural spirit, or wind in the head that obstructeth the roots of the nerves, and moving them violently, taketh away the motion which naturally they should have from the power of the soul in the brain, and thereby causeth violent, and irregular motions (which men call convulsions) in the parts; insomuch as he that is seized therewith, falleth down sometimes into the water, and sometimes into the fire, as a man deprived of his senses; so also in the body politic, when the spiritual power, moveth the members of a commonwealth, by the terror of punishments, and hope of rewards (which are the nerves of it,) otherwise than by the civil power (which is the soul of the commonwealth), they ought to be moved; and by strange, and hard words suffocates their understanding, it must needs thereby distract the people, and either overwhelm the commonwealth with oppression, or cast it into the fire of a civil war.
(II.xxix.15)