structural:summarization
Childhood

Marcus's sister, Annia Cornificia Faustina, was probably born in 122 or 123. His father probably died in 125 or 126 when Marcus was three years old during his praetorship. Though he can hardly have known his father, Marcus wrote in his Meditations that he had learned 'modesty and manliness' from his memories of his father and the man's posthumous reputation. His mother Lucilla did not remarry and, following prevailing aristocratic customs, probably did not spend much time with her son. Instead, Marcus was in the care of 'nurses', and was raised after his father's death by his grandfather Marcus Annius Verus (II), who had always retained the legal authority of patria potestas over his son and grandson. Technically this was not an adoption, the creation of a new and different patria potestas. Lucius Catilius Severus, described as Marcus's maternal great-grandfather, also participated in his upbringing; he was probably the elder Domitia Lucilla's stepfather. Marcus was raised in his parents' home on the Caelian Hill, an upscale area with few public buildings but many aristocratic villas. Marcus's grandfather owned a palace beside the Lateran, where he would spend much of his childhood. Marcus thanks his grandfather for teaching him 'good character and avoidance of bad temper'. He was less fond of the mistress his grandfather took and lived with after the death of his wife Rupilia. Marcus was grateful that he did not have to live with her longer than he did.

From a young age, Marcus displayed enthusiasm for wrestling and boxing. He trained in wrestling as a youth and into his teenage years, learned to fight in armour and joined the Salii, an order of priests dedicated to the god Mars that were responsible for the sacred shields, called Ancilia, and possibly for heralding war season's beginning and end. Marcus was educated at home, in line with contemporary aristocratic trends; he thanks Catilius Severus for encouraging him to avoid public schools. One of his teachers, Diognetus, a painting master, proved particularly influential; he seems to have introduced Marcus Aurelius to the philosophic way of life. In April 132, at the behest of Diognetus, Marcus took up the dress and habits of the philosopher: he studied while wearing a rough Greek cloak, and would sleep on the ground until his mother persuaded him to sleep on a bed. A new set of tutors – the Homeric scholar Alexander of Cotiaeum along with Trosius Aper and Tuticius Proculus, teachers of Latin – took over Marcus's education in about 132 or 133. Marcus thanks Alexander for his training in literary styling. Alexander's influence – an emphasis on matter over style and careful wording, with the occasional Homeric quotation – has been detected in Marcus's Meditations.