 By thus (so to speak automatically) tracing back these mutually corresponding passages in later authors to the, as he assumed, faithful reporter Theophrastus, Diels believed he gained access to reliable information about Presocratic philosophy. Thanks to the stemmatic method back to the archetype it became possible to bestow upon a passage (a brief lemma in, for instance, Aëtius) dealing with a tenet of a Presocratic philosopher, the conditional status of being an attestation which, though still at second hand, should be early and therefore the more to be trusted. It is with the importance meted out to such so-called ‘fragments’ that these lemmata, removed by Diels’ scissors from Aëtian chapters dealing with subjects, figure in the chronological series of chapters devoted to persons in two fundamental works he published. These are the Poetarum Philosophorum Fragmenta (‘Fragments of the Poet-Philosophers’) of 1901, reprinted 2000, and the famous, several times revised (in later editions by Diels’ collaborator Kranz), and often reprinted Fragmente der Vorsokratiker (‘Fragments of the Presocratics’, abbreviated D.-K.), first published in 1903. Scholars indeed still tend to view these Aëtian lemmata as a sort of Theophrastean fragments, and Theophrastus is believed to be a bona fide source. This also holds for those passages in Hippolytus, Diogenes Laërtius and other authors in D.-K. which had been traced back to Theophrastus hypothetically.