Man’s best possession is a sympathetic wife.

[ἄριστον ἀνδρὶ κτῆμα συμπαθὴς γυνή]

Euripides (485?-406? BC) Greek tragic dramatist

Antigone [Ἀντιγόνη], frag. 164 (TGF) (c. 420-406 BC)
    (Source)

(Source (Greek)). Alternate translation:

The best thing for a husband is an understanding wife.
[Source]