Diogenes Laertius (c. 200-250 CE) and Porphyry (c. 234-305 CE) each wrote a Life of Pythagoras. Iamblichus’ (c. 245-325 CE) work is titled On the Pythagorean Life, which includes some limited biography but focuses more on the way of life supposedly established by Pythagoras for his followers.
Diogenes Laertius (c. 200-250 CE) and Porphyry (c. 234-305 CE) each wrote a Life of Pythagoras. Iamblichus’ (c. 245-325 CE) work is titled On the Pythagorean Life, which includes some limited biography but focuses more on the way of life supposedly established by Pythagoras for his followers.
Thomas Taylor's 1818 translation is online here Taylor suggests on internal evidence that this work was published by his disciples after his death. If this guess is right (and I'm dubious) then the work would date from the last years of Iamblichus maybe 315-320 CE.
Some scholars emphasise the parallels between Iamblichus' De Vita Pythagorica and the Life of Plotinus by Porphyry. They would regard the works as written at around the same time, one responding to the other. Now on internal evidence the Life of Plotinus dates from very shortly after 300 CE. IF this line of argument is valid then De Vita Pythagorica would date from around 300 CE or a few years after.
andrewcriddle wrote: ↑Sun Aug 29, 2021 5:28 am Some scholars emphasise the parallels... works as written at around the same time {#1}, one responding to the other {#2}.