The Meditations were Marcus Aurelius's private jottings, so parallel to the "scholarly notebooks" of Caesar that the article refers to: De bello gallica &c. wer

The Meditations were Marcus Aurelius's private jottings, so parallel to the "scholarly notebooks" of Caesar that the article refers to: De bello gallica &c. were for public consumption. I can't provide a source, but I was under the distinct impression that the Roman patrician class spoke Greek among themselves in private: Latin was for formal, public and ceremonial use. Suetonius says that Caesar's last words were in Greek (rather than the "Et tu, Brute?" that Shakespeare gives).