Lucretius, De Rerum Natura 4.453-461

“And when sleep has bound our limbs with sweet
slumber and the whole body lies in deep repose,
we still seem to ourselves to be awake and to move
our limbs—in the obscure darkness of night.
We think that we see the sun and the light of day;
we seem to trade a closed room or the sky, sea,
rivers and mountains—-we cross fields on our feet.
We hear sounds when the heavy quiet of night
hangs over everything; we utter words while staying silent.”

Denique cum suavi devinxit membra sopore
somnus et in summa corpus iacet omne quiete,
tum vigilare tamen nobis et membra movere
nostra videmur, et in noctis caligine caeca
cernere censemus solem lumenque diurnum,
conclusoque loco caelum mare flumina montis
mutare et campos pedibus transire videmur,
et sonitus audire, severa silentia noctis
undique cum constent, et reddere dicta tacentes.