Aristotle, Nicomachean Ethics 1. 6-9
“We use ‘self-sufficient’ not to mean a person alone—someone living in isolation—but to include one’s parents, children, spouse, friends, and even fellow citizens, since a human being is a social creature by nature. Now, some limit needs to be observed in these ties—for it will go on endlessly if you extend it to someone’s ancestors and descendants. But that’s a problem for another time.
We posit that self-sufficiency is something which in itself makes life attractive and lacks nothing and for this reason we think it is happiness, since we imagine that happiness is the most preferable of all things when it is not counted with others. It is clear that it is desirable even with the least of the goods—the addition of goods increases the total, since the greater good is always desirable.”
τὸ δ᾿ αὔταρκες λέγομεν οὐκ αὐτῷ μόνῳ, τῷ ζῶντι βίον μονώτην, ἀλλὰ καὶ γονεῦσι καὶ τέκνοις καὶ γυναικὶ καὶ ὅλως τοῖς φίλοις καὶ πολίταις, ἐπειδὴ φύσει πολιτικὸν ὁ ἄνθρωπος. τούτων δὲ ληπτέος ὅρος τις· ἐπεκτείνοντι γὰρ ἐπὶ τοὺς γονεῖς καὶ τοὺς ἀπογόνους καὶ τῶν φίλων τοὺς φίλους εἰς ἄπειρον πρόεισιν. ἀλλὰ τοῦτο μὲν εἰσαῦθις ἐπισκεπτέον, τὸ δ᾿ αὔταρκες τίθεμεν ὃ μονούμενον αίπετὸν ποιεῖ τὸν βίον καὶ μηδενὸς ἐνδεᾶ· τοιοῦτον δὲ τὴν εὐδαιμονίαν οἰόμεθα εἶναι. ἔτι δὲ πάντων αἱρετωτάτην μὴ συναριθμουμένην—συναριθμουμένην γὰρ δῆλον ὡς αἱρετωτέραν μετὰ τοῦ ἐλαχίστου τῶν ἀγαθῶν, ὑπεροχὴ γὰρ ἀγαθῶν γίνεται τὸ προστιθέμενον, ἀγαθῶν δὲ τὸ μεῖζον αἱρετώτερον
John Donne, Meditation 17
No man is an Iland, intire of itselfe; every man
is a peece of the Continent, a part of the maine;
if a Clod bee washed away by the Sea, Europe
is the lesse, as well as if a Promontorie were, as
well as if a Manor of thy friends or of thine
owne were; any mans death diminishes me,
because I am involved in Mankinde;
And therefore never send to know for whom
the bell tolls; It tolls for thee.