Sunrise and
Sunset

Soles occidere et redire possunt:
Nobis cum semel occidit brevis lux
Nox est perpetua una dormienda.

Suns can set and rise again; but to our brief light, when once it sets, there comes a never-ending night that must be passed in never-ending sleep.

--- The Poems of Gaius Valerius Catullus
Translation by Charles Stuttaford
As quoted in the TLS
18 June 2010