RT Journal Article SR Electronic A1 Vítek, Tomáš T1 JF Aither YR 2025 VO 16 IS 2 SP 4 OP 41 DO 10.5507/aither.2025.002 UL https://aither.upol.cz/en/artkey/ath-202402-0001.php AB The article explores the beginnings of the integration of the term psyche into Presocratic philosophy. The author's main aim was to examine whether the traditional authorities with which the new use of psyche is usually associated would actually hold up in this role if the doxographic tradition is left aside. The Orphics and Pythagoreans, who are often regarded as the founders of the doctrine of immortal psyche in the 6th century BCE, could not have played this role because, on the one hand, it is not attested by authentic texts and, on the other hand, the historical development of the meanings of psyche contradicts it. This is also the case for Anaximenes, since the key fragment B 2 is almost certainly inauthentic and compiled from the ideas and terms of Diogenes of Apollonia.