He was the intimate friend of Persius, who dedicated his sixth satire to him, and whose works he edited (Schol. on Persius, vi. I). He had a great reputation as a poet; Quintilian (Instit. x. I. 96) went so far as to say that with the exception of Horace, he was the only lyric poet worth reading.
He is also identified with the author of a treatise De Metris of which considerable fragments, probably of an abbreviated edition, are extant (ed. Keil, 1885). The work was probably originally in verse, and afterwards recast or epitomized in prose form to be used as an instruction book. An account of some of the metres of Horace (in Keil, Grammatici Latini, vi. 305), bearing the title Ars Caesii Bassi de Metris is not by him but chiefly borrowed by its unknown author, from the treatise mentioned above.
- Stover, Tim (5 July 2012). Epic and Empire in Vespasianic Rome: A New Reading of Valerius Flaccus' Argonautica. Oxford University Press. p. 8. ISBN 978-0-19-964408-7.
- Chisholm 1911.
- Wolfgang Haase; Hildegard Temporini (1998). Aufstieg und Niedergang der romischen Welt: (ANRW) : Geschichte und Kultur Roms im Spiegel der neueren Forschung : Teil II : Principat. Walter de Gruyter. pp. 3254–. ISBN 978-3-11-015699-7.
- public domain: Chisholm, Hugh, ed. (1911). "Bassus, Caesius". Encyclopædia Britannica. Vol. 3 (11th ed.). Cambridge University Press. p. 498. This article incorporates text from a publication now in the
- Corpus Grammaticorum Latinorum; complete texts and full bibliography.