The Meditations is divided into 12 books that chronicle different periods of Marcus's life. Each book is not in chronological order and it was written for no one but himself. The style of writing that permeates the text is one that is simplified, straightforward, and perhaps reflecting Marcus's Stoic perspective on the text. Marcus Aurelius wrote the 12 books of the Meditations in Koine Greek as a source for his own guidance and self-improvement. A central theme to Meditations is to analyze your judgement of self and others and developing a cosmic perspective.

(Source: Wikipedia)