Creatures of a day! What is a man?
What is he not? A dream of a shadow
Is our mortal being. But when there comes to men
A gleam of splendour given of Heaven,
Then rests on them a light of glory
And blessèd are their days.

ἐπάμεροι· τί δέ τις; τί δ᾿ οὔ τις; σκιᾶς ὄναρ
ἄνθρωπος. ἀλλ᾿ ὅταν αἴγλα διόσδοτος ἔλθῃ,
λαμπρὸν φέγγος ἔπεστιν ἀνδρῶν καὶ μείλιχος αἰών.

Original text (Ancient Greek)

Notes from Wikiquote

Man is a dream about a shadow. But when some splendour falls upon him from God, a glory comes to him and his life is sweet.

(R. S. Thomas, 1985)