{"schemaVersion":2,"id":"tlg0363.tlg007.local002","url":"https://thegreeklibrary.org/works/tlg0363.tlg007.local002/","urn":"urn:cts:greekLit:tlg0363.tlg007.local002","title":"Τετράβιβλος","titleGreek":"Τετράβιβλος","alternateTitles":[],"author":"Claudius Ptolemy","authorityName":"Claudius PTOLEMAEUS Astrol. et Math.","authorUrl":"https://thegreeklibrary.org/authors/tlg0363-claudius-ptolemaeus-astrol-et-math/","authorityUrl":"https://thegreeklibrary.org/authors/tlg0363-claudius-ptolemaeus-astrol-et-math/","editors":["Frank Egleston Robbins"],"publication":{"digitalPublisher":"Trustees of Tufts University","sourceTitle":"Tetrabiblos","edition":null,"publisher":"Harvard University Press","place":"Cambridge, Mass.","date":"1964","volume":null,"series":"Loeb Classical Library","citation":null,"citationShort":null},"rights":{"text":"Available under a Creative Commons Attribution-ShareAlike 4.0 International License","url":"https://creativecommons.org/licenses/by-sa/4.0/"},"provenance":{"authority":"Perseus Project","sponsors":["Perseus Project, Tufts University"],"funders":["Google Digital Humanities Awards Program"],"principal":"Gregory Crane","responsibilities":[{"role":"Prepared under the supervision of","names":["Lisa Cerrato","Rashmi Singhal","Bridget Almas"]}]},"corpus":{"version":"2.2.0","date":"2026-08-29"},"revisionDate":"2026-08-15","sourceUrl":"https://archive.org/details/L350ManethoHistoryOfEgyptPtolemyTetrabiblos_201312/page/n325/mode/2up","sourceLinkType":null,"sourceRights":null,"citation":"Claudius Ptolemy. Τετράβιβλος. ed. Frank Egleston Robbins. Tetrabiblos, Cambridge, Mass., Harvard University Press, 1964. urn:cts:greekLit:tlg0363.tlg007.local002","excerpt":"Τῶν τὸ δἰ ἀστρονομίας προγνωστικὸν τέλος παρασκευαζόντων, ὦ Σύρε, δύο τῶν μεγίστων καὶ κυριωτάτων ὑπαρχόντων, ἑνὸς μὲν τοῦ πρώτου καὶ τάξει καὶ δυνάμει, καθʼ ὃ τοὺς γινομένους ἑκάστοτε σχηματισμοὺς τῶν κινήσεων ἡλίου καὶ σελήνης καὶ ἀστέρων πρὸς ἀλλήλους τε καὶ τὴν γῆν καταλαμβανόμεθα· δευτέρου δὲ καθʼ ὃ διὰ τῆς φυσικῆς τῶν σχηματισμῶν αὐτῶν ἰδιοτροπίας τὰς ἀποτελουμένας μεταβολὰς τῶν ἐμπεριεχομένων ἐπισκεπτόμεθα· τὸ μὲν πρῶτον ἰδίαν ἔχον καὶ δἰ ἑαυτὴν αἱρετὴν θεωρίαν, κἂν μὴ τὸ ἐκ τῆς ἐπιζεύξεως τοῦ δευτέρου τέλος συμπεραίνηται, κατʼ ἰδίαν σύνταξιν ὡς μάλιστα ἐνῆν ἀποδεικτικῶς σοι περιώδευται. περὶ δὲ τοῦ δευτέρου καὶ μὴ ὡσαύτως αὐτοτέλους ἡμεῖς ἐν τῷ παρόντι ποιησόμεθα λόγον κατὰ τὸν ἁρμόζοντα φιλοσοφίᾳ τρόπον καὶ ὡς ἄν τις φιλαλήθει μάλιστα χρώμενος σκοπῷ μήτε τὴν κατάληψιν αὐτοῦ παραβάλλοι τῇ τοῦ πρώτου καὶ ἀεὶ ὡσαύτως ἔχοντος βεβαιότητι, τὸ ἐν πολλοῖς ἀσθενὲς καὶ δυσεικαστον τῆς…","divisions":[{"label":"Book 1","url":"https://thegreeklibrary.org/works/tlg0363.tlg007.local002/#tlg0363-tlg007-local002-1"},{"label":"Book 2","url":"https://thegreeklibrary.org/works/tlg0363.tlg007.local002/#tlg0363-tlg007-local002-2"},{"label":"Book 3","url":"https://thegreeklibrary.org/works/tlg0363.tlg007.local002/#tlg0363-tlg007-local002-3"},{"label":"Book 4","url":"https://thegreeklibrary.org/works/tlg0363.tlg007.local002/#tlg0363-tlg007-local002-4"}],"formats":{"html":"https://thegreeklibrary.org/works/tlg0363.tlg007.local002/","json":"https://thegreeklibrary.org/api/works/tlg0363.tlg007.local002.json","compressedReadingDocument":"https://thegreeklibrary.org/works/tlg0363/tlg007/local002.json.gz"}}