Phaedo/ Plato
ἀλλ᾽ ἰτέον, ἔφη. πρῶτόν με ὑπομνήσατε ἃ ἐλέγετε, ἐὰν μὴ φαίνωμαι μεμνημένος. Σιμμίας μὲν γάρ, ὡς ἐγᾦμαι, ἀπιστεῖ τε καὶ φοβεῖται μὴ ἡ ψυχὴ ὅμως καὶ θειότερον καὶ κάλλιον ὂν τοῦ σώματος προαπολλύηται ἐν ἁρμονίας εἴδει οὖσα: Κέβης δέ μοι ἔδοξε τοῦτο μὲν ἐμοὶ συγχωρεῖν, πολυχρονιώτερόν γε εἶναι ψυχὴν σώματος, ἀλλὰ τόδε ἄδηλον παντί, μὴ πολλὰ δὴ σώματα καὶ πολλάκις κατατρίψασα ἡ ψυχὴ τὸ τελευταῖον σῶμα καταλιποῦσα νῦν αὐτὴ ἀπολλύηται, καὶ ᾖ αὐτὸ τοῦτο θάνατος, ψυχῆς ὄλεθρος, ἐπεὶ σῶμά γε ἀεὶ ἀπολλύμενον οὐδὲν παύεται. ἆρα ἄλλ᾽ ἢ ταῦτ᾽ ἐστίν, ὦ Σιμμία τε καὶ Κέβης, ἃ δεῖ ἡμᾶς ἐπισκοπεῖσθαι;
Thucydides 1.2.2
τῆς γὰρ ἐμπορίας οὐκ οὔσης, οὐδ᾽ ἐπιμειγνύντες ἀδεῶς ἀλλήλοις οὔτε κατὰ γῆν οὔτε διὰ θαλάσσης, νεμόμενοί τε τὰ αὑτῶν ἕκαστοι ὅσον ἀποζῆν καὶ περιουσίαν χρημάτων οὐκ ἔχοντες οὐδὲ γῆν φυτεύοντες, ἄδηλον ὂν ὁπότε τις ἐπελθὼν καὶ ἀτειχίστων ἅμα ὄντων ἄλλος ἀφαιρήσεται, τῆς τε καθ᾽ ἡμέραν ἀναγκαίου τροφῆς πανταχοῦ ἂν ἡγούμενοι ἐπικρατεῖν, οὐ χαλεπῶς ἀπανίσταντο, καὶ δι᾽ αὐτὸ οὔτε μεγέθει πόλεων ἴσχυον οὔτε τῇ ἄλλῃ παρασκευῇ. [thucydides. 1.2.2]
Without commerce, without freedom of communication either by land or sea, cultivating no more of their territory than the exigencies of life required, destitute of capital, never planting their land （for they could not tell when an invader might not come and take it all away, and when he did come they had no walls to stop him, thinking that the necessities of daily sustenance could be supplied at one place as well as another, they cared little for shifting their habitation, and consequently neither built large cities nor attained to any other form of greatness. [J.M Dent]
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