quality:correction, linguistic:paraphrasing, stylistic:tone
Early rule

Soon after the emperor's accession, Marcus's eleven-year-old daughter, Annia Lucilla, was betrothed to Lucius (in spite of the fact that he was, formally, her uncle). At the ceremonies commemorating the event, new provisions were made for the support of poor children, along the lines of earlier imperial foundations. Marcus and Lucius proved popular with the people of Rome, who strongly approved of their civiliter ("lacking pomp") behaviour. The emperors permitted free speech, evidenced by the fact that the comedy writer Marullus was able to criticize them without suffering retribution. As the biographer wrote, "No one missed the lenient ways of Pius".

Marcus replaced a number of the empire's major officials. The ab epistulis Sextus Caecilius Crescens Volusianus, in charge of the imperial correspondence, was replaced with Titus Varius Clemens. Clemens was from the frontier province of Pannonia and had served in the war in Mauretania. Recently, he had served as procurator of five provinces. He was a man suited for a time of military crisis. Lucius Volusius Maecianus, Marcus's former tutor, had been prefectural governor of Egypt at Marcus's accession. Maecianus was recalled, made senator, and appointed prefect of the treasury (aerarium Saturni). He was made consul soon after. Fronto's son-in-law, Gaius Aufidius Victorinus, was appointed governor of Germania Superior.

Fronto returned to his Roman townhouse at dawn on 28 March, having left his home in Cirta as soon as news of his pupils' accession reached him. He sent a note to the imperial freedman Charilas, asking if he could call on the emperors. Fronto would later explain that he had not dared to write the emperors directly. The tutor was immensely proud of his students. Reflecting on the speech he had written on taking his consulship in 143, when he had praised the young Marcus, Fronto was ebullient: "There was then an outstanding natural ability in you; there is now perfected excellence. There was then a crop of growing corn; there is now a ripe, gathered harvest. What I was hoping for then, I have now. The hope has become a reality". Fronto called on Marcus alone; neither thought to invite Lucius.

Lucius was less esteemed by Fronto than his brother, as his interests were on a lower level. Lucius asked Fronto to adjudicate in a dispute he and his friend Calpurnius were having on the relative merits of two actors. Marcus told Fronto of his reading – Coelius and a little Cicero – and his family. His daughters were in Rome with their great-great-aunt Matidia; Marcus thought the evening air of the country was too cold for them. He asked Fronto for 'some particularly eloquent reading matter, something of your own, or Cato, or Cicero, or Sallust or Gracchus – or some poet, for I need distraction, especially in this kind of way, by reading something that will uplift and diffuse my pressing anxieties.' Marcus's early reign proceeded smoothly; he was able to give himself wholly to philosophy and the pursuit of popular affection. Soon, however, he would find he had many anxieties. It would mean the end of the felicitas temporum ('happy times') that the coinage of 161 had proclaimed.

In either autumn 161 or spring 162, the Tiber overflowed its banks, flooding much of Rome. It drowned many animals, leaving the city in famine. Marcus and Lucius gave the crisis their personal attention. In other times of famine, the emperors are said to have provided for the Italian communities out of the Roman granaries.

Fronto's letters continued through Marcus's early reign. Fronto felt that, because of Marcus's prominence and public duties, lessons were more important now than they had ever been before. He believed Marcus was 'beginning to feel the wish to be eloquent once more, in spite of having for a time lost interest in eloquence'. Fronto would again remind his pupil of the tension between his role and his philosophic pretensions: 'Suppose, Caesar, that you can attain to the wisdom of Cleanthes and Zeno, yet, against your will, not the philosopher's woolen cape'.

The early days of Marcus's reign were the happiest of Fronto's life: Marcus was beloved by the people of Rome, an excellent emperor, a fond pupil, and perhaps most importantly, as eloquent as could be wished. Marcus had displayed rhetorical skill in his speech to the senate after an earthquake at Cyzicus. It had conveyed the drama of the disaster, and the Senate had been awed: "Not more suddenly or violently was the city stirred by the earthquake than the minds of your hearers by your speech". Fronto was hugely pleased.