Though nominally a mirror-for-princes text,
De principis instructione is also a personal drama of the rise and fall of Henry II Its primary theme is the difference between a good prince and a tyrant. Gerald himself places the greatest emphasis on the virtue of
temperance and the notion that temperance keeps the other three
cardinal virtues of
justice,
prudence, and
fortitude in check. He also emphasises prudence, arguing that it moderates the other virtues and prevents justice from denigrating into
cruelty, fortitude into temerity, and temperance into
lassitude. and Bartlett has said it is "not a sophisticated work of analysis" that contains "no political theory of any significance". Karl Schnith considers it to be Gerald's least readable work, and Frédérique Lachaud described it as the sort of work an ambitious cleric might compose to gain royal attention. István P. Bejczy disagreed, arguing that the work deserves a better reputation and describing it as presenting the anti-
Machiavellian idea that a prince should not be feared but loved, and that it succeeds at taking the cardinal virtues and their subdivisions and applying them to an educational purpose.
Second and third distinctions The second and third distinctions differ sharply from the first and constitute a vicious condemnation of Henry II and his dynasty.
Jean-Philippe Genet, Briggs, and Nederman describe them as an "anti-mirror" and an "impassioned assault on the corrupt rule of England of his day." Together they present a narrative of Henry II's rise and fall intended to "teach the rule of government through example." and
Guy's coronation This division of rise and fall is visible in the structure of the distinctions, with Gerald describing the second as dealing with Henry's "elevation and glory", and the third as dealing with his "painful downfall and catastrophe" and showing the "vengeance, disaster, and ignominy" inflicted upon Henry by God. The turning point Gerald chose was
Heraclius's 1185 embassy and Henry's refusal to go on crusade, which is shown at the climax of the second distinction and according to Gerald concludes with Heraclius issuing a prophetic warning against Henry after being rebuffed, an event that
Robert Bartlett describes as "utterly implausible". Gerald used two different frameworks to present this, merging the classical notion of a
wheel of fortune with the
Judeo-Christian notion of
providence. He presents Henry's successes as God's encouragement and his failures God's chastisement and punishment, while also presenting his failures as an inevitable consequence of the turning of the wheel. These themes sometimes clashed, with the notion of the intervention of God conflicting with the notion of inevitable fate. At other times Gerald successfully harmonised them, presenting the consequences of the 1170 murder of
Thomas Becket as moral causation, with the turning of the wheel altered to align with this. Together, these distinctions present a tale of kingly hubris and
divine retribution, of Henry's abandonment of God and God's abandonment of him in turn. They also contain several intermingled themes, including the conflicts between Henry II and his sons, relations with the kings of France, and events in the
holy land. The narrative extends beyond the fate of Henry II and to the dynasties of England and France, with Gerald presenting the entire line of Norman kings, from
William the Conqueror to Henry II's son John, as tyrants, vicious and tainted by the presence of a "
demon countess" in their lineage. By contrast, Gerald presents the Capetians favourably, showing them as noble kings who inspired love and loyalty from their subjects in contrast to the tyrannical Angevins. The distinction concludes with failed hope, with the French whose arrival Gerald celebrated having been defeated and the Angevins not overthrown but instead persisting with John's infant son on the throne.
Kate Norgate wrote that "no careful and dispassionate reader of Gerald's writings can fail to see that in all of them his primary object was to glorify himself" and the distinctions are characterised by vindictiveness, vanity, conceit, and by gloating, as Gerald takes delight in the misfortune and fall of Henry and condemns both him and his dynasty. == Manuscripts and publication history ==