Preserved by One Anthologist, Centuries Later

Nothing about this hymn's survival was guaranteed by its own importance in antiquity. It exists today only because Stobaeus, a compiler working in the fifth century CE, roughly seven hundred years after Cleanthes wrote it, chose to include it in his anthology of excerpts from earlier philosophical and literary works, a collection assembled for reference and educational use rather than as a work of original scholarship. Had Stobaeus not selected this particular text from whatever fuller Stoic material still circulated in his own time, it is very likely the hymn would have been lost entirely along with the great majority of early Stoic writing, none of which survives complete from Zeno or Cleanthes themselves, only fragments and later reports, making this hymn an unusually rare direct window onto the movement's founding generation rather than a report about it filtered through a later summarizer.

Cleanthes himself, who succeeded Zeno of Citium as the second head of the Stoic school in Athens in the early third century BCE, is remembered in the biographical tradition, chiefly through Diogenes Laertius, for having come to philosophy from manual labor, reportedly supporting his studies by working at night as a water carrier after spending his days in Zeno's classes, a detail later writers used to illustrate Stoic ideals of discipline and endurance regardless of social origin. Whether that detail is strictly biographical fact or partly legend built up around a philosopher whose personal austerity matched his school's teaching, it was already circulating in antiquity as part of how Cleanthes was remembered alongside this hymn, his one substantial surviving composition.