HECUBA: For from darkness and the endearments of the night mortals have their keenest joys.

[ἙΚΆΒΗ: ἐκ τοῦ σκότου τε τῶν τε νυκτερησίων
φίλτρων μεγίστη γίγνεται βροτοῖς χάρις.]

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

Hecuba [Hekabe; Ἑκάβη], l. 831ff (c. 424 BC) [tr. Coleridge (1938)]
    (Source)

Reminding a reluctant Agamemnon that he's been sleeping with her daughter, Cassandra, to enlist him in avenging the death of her son, Polydorus.

This passage of the text is elided in some translations. Where present, it is sometimes noted as a speculated or fragmentary insertion.

(Source (Greek)). Alternate translations:

In the soul of man
The endearments of the night, by darkness veil'd,
Create the strongest interest.
[tr. Wodhull (1809)]

For from the secret shade, and from night's joys, the greatest delight is wont to spring to mortals.
[tr. Edwards (1826)]

For of the darkness and the night's love-spells
Cometh on men the chiefest claim for thank.
[tr. Way (Loeb) (1894)]

I know how men adore the dark of night.
[tr. McGuinness (2004)]

The greatest benefit to humans springs from the night and the delights of love within it.
[tr. Theodoridis (2007)]