Antipater was an ancient Greek physician and author of a work titled "On the Soul", of which the second book is quoted by the Scholiast on Homer

Homer

In the Western classical tradition Homer , is the author of the Iliad and the Odyssey, and is revered as the greatest ancient Greek epic poet. These epics lie at the beginning of the Western canon of literature, and have had an enormous influence on the history of literature.When he lived is...

, in which he said that the soul increased, diminished, and at last perished with the body; and which may very possibly be the work quoted by Diogenes Laertius

Diogenes Laertius

Diogenes Laertius was a biographer of the Greek philosophers. Nothing is known about his life, but his surviving Lives and Opinions of Eminent Philosophers is one of the principal surviving sources for the history of Greek philosophy.-Life:Nothing is definitively known about his life...

, and commonly attributed to Antipater of Tarsus

Antipater of Tarsus

Antipater of Tarsus was a Stoic philosopher. He was the pupil and successor of Diogenes of Babylon as leader of the Stoic school, and was the teacher of Panaetius...

.

If he is the physician who is said by Galen

Galen

Aelius Galenus or Claudius Galenus , better known as Galen of Pergamon , was a prominent Roman physician, surgeon and philosopher...

 to have belonged to the Methodic school

Methodic school

The Methodic school of medicine was an ancient school of medicine in ancient Greece and Rome. The Methodic school arose in reaction to both the Empiric school and the Dogmatic school...

, he must have lived in or after the 1st century BC; and this date will agree very well with the fact of his being quoted by Andromachus

Andromachus

Andromachus was an Anatolian nobleman of Greek Macedonian and Persian descent. Andromachus’ father was a wealthy nobleman who owned estates in Anatolia and his family had power in Anatolia with strong royal connections. Andromachus was the second son of Achaeus by an unnamed Greek mother and a...

, Scribonius Largus

Scribonius Largus

Scribonius Largus was the court physician to the Roman emperor Claudius.About 47 AD, at the request of Gaius Julius Callistus, the emperor's freedman, he drew up a list of 271 prescriptions , most of them his own, although he acknowledged his indebtedness to his tutors, to friends and to the...

, and Caelius Aurelianus

Caelius Aurelianus

Caelius Aurelianus of Sicca in Numidia was a Roman physician and writer on medical topics. He is best known for his translation from Greek to Latin of a work by Soranus of Ephesus, On Acute and Chronic Diseases. He probably flourished in the 5th century, although some place him two or even three...

. His prescriptions are frequently quoted with approbation by Galen and Aetius

Aëtius Amidenus

Aëtius of Amida was a Byzantine physician and medical writer, particularly distinguished by the extent of his erudition. Historians are not agreed about his exact date...

, and the second book of his "Epistles" is mentioned by Caelius Aurelianus.