The goal in life is living in agreement with nature.

Διόπερ πρῶτος ὁ Ζήνων ἐν τῷ Περὶ ἀνθρώπου φύσεως τέλος εἶπε τὸ ὁμολογουμένως τῇ φύσει ζῆν, ὅπερ ἐστὶ κατ᾽ ἀρετὴν ζῆν

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Original Citation

Zeno. Quoted in The Lives and Opinions of Eminent Philosophers, written by Diogenes Laërtius. c. 240 AD, bk. 7, ch. 1, sect. 87.

Current Citation

Zeno. Quoted in The Lives of Eminent Philosophers, written by Diogenes Laërtius, translated by Pamela Mensch, edited by James Miller. Oxford University Press, 2018, bk. 7, ch. 1, sect. 87.