is the sixth novel in the Rougon-Macquart series by Émile Zola. It was serialized in 1876 in Le Siècle before being published in novel form by Charpentier. It was translated into English by Brian Nelson in 2018.

The novel is set in the highest echelons of Second Empire government. It follows the career of Eugène Rougon and a dozen or so of his cronies as they jockey for political favor and personal gain, and embraces the public and personal life of Emperor Napoleon III.

Son Excellence Eugène Rougon

The main character is Eugène Rougon (b. 1811), the eldest son of Pierre and Félicité Rougon. Eugène is first introduced in La fortune des Rougon as a key player in the coup d'état of 1851 which established Napoleon III as Emperor of the French. Eugène's maneuverings establish his parents' control over the town of Plassans and lay the foundations for solidifying the family fortune. Eugène, acknowledged as one of the prime movers in legitimizing the Emperor, has remained in Paris to further his quest for power.

Son Excellence Eugène Rougon

Eugène's brothers are Pascal, who is the main character of Le docteur Pascal, and Aristide, whose story is told in La curée and L'argent. He also has two sisters: Sidonie, who appears in La curée, and Marthe, one of the protagonists of La conquête de Plassans.

Son Excellence Eugène Rougon

Plot summary

The novel opens in 1856 with Rougon's career at a low ebb. In conflict with the Emperor over an inheritance claim involving a relative of the Empress, Rougon resigns from his position as premier of the Corps législatif before he can be dismissed. This puts the plans and dreams of Rougon's friends in limbo, as they are counting on his political influence to win various personal favors. His greatest ally and his greatest adversary is Clorinde Balbi, an Italian woman of dubious background and devious intent. Clorinde desires power as much as Rougon does but, because she is a woman, she is forced to act behind the scenes. Rougon refuses to marry her because he believes two such dominant personalities would inevitably destroy each other. Instead, he encourages her to marry M. Delestang, a man of great wealth who can easily be wheedled, while he himself takes a respectable nonentity of a wife who will not hinder his ambition.

Rougon learns of an assassination plot against the Emperor, but decides to do nothing about it. In consequence, after the attempt is made (the Orsini incident of 1858), the Emperor makes him Minister of the Interior with power to maintain peace and national security at any cost. Rougon uses this as an opportunity to punish his political adversaries, deport anti-imperialists by the hundreds, and reward his loyal friends with honors, commissions, and political appointments. Through his influence, Delestang is made Minister of Agriculture and Commerce.

As Rougon's power expands, however, his cronies begin to desert him despite his fulfilling their personal requests. They feel that he has not done enough for them and what he has done either has not been good enough or has had consequences so disastrous as to be no help at all. Moreover, they consider him ungrateful, given all the work they claim to have done to have him reinstated as Minister. Eventually, Rougon is involved in several great scandals based on the favors he has shown to his inner circle.

At the center of all this conflict is Clorinde. As Rougon's power has grown, so has hers, until she has influence at the highest level and on an international scale, including as the Emperor's mistress. Now having the upper hand, she is able to punish Rougon for his refusal to marry her. To silence political and personal opposition, Rougon decides to submit his resignation to the Emperor, confident that it will not be accepted. However, it is accepted, and Delestang is made Minister of the Interior, the implication being that both actions are founded on Clorinde’s authority over the Emperor.

The novel ends in 1862. The Emperor has returned Rougon to service as Minister without Portfolio, giving him unprecedented powers in the wake of Italian unification. Ostensibly, the appointment is meant to reconfigure the country on less imperialistic, more liberal lines, but in reality Rougon has a free hand to crush resistance, curtail opposition, and control the press.