This is living, not to live unto oneself alone.
τοῦτ᾿ ἔστι τὸ ζῆν, οὐχ ἑαυτῷ ζῆν μόνῳ.
Original text (Ancient Greek)
Notes from Wikiquote
Paraphrased by T. W. Higginson, 1870 | To live is not to live for one’s self alone; let us help one another.