At night all cats are grey — in the dark, differences disappear and all things look the same. Judgment requires light; in the absence of information, distinctions collapse.
This proverb is particularly associated with Piedmont and Turin, a city where fog and the long northern winters create genuine darkness for much of the year. The fog of the Po Valley at night creates a world where shapes are indistinct and colours disappear — a disorienting, equalising darkness. The proverb has several layers of meaning. At its most practical, it warns against making decisions without sufficient information: in the dark, a good cat and a bad cat look the same, so wait for daylight before choosing. More cynically, it observes that in conditions of ignorance or cover-up, the guilty and the innocent are indistinguishable — a point applicable to politics and justice. Most cheerfully, it is used in the context of human appearance: at night, beauty and ugliness disappear, and all lovers look equal.
Piedmontese version of the pan-European proverb. The fog and darkness of the Po Valley winter give it particular local resonance.
A Turin judge on the difficulty of establishing truth
I testimoni contraddicono tutti gli altri. At neuit tüi i gat a son grigio — senza prove materiali non possiamo distinguere.
The witnesses all contradict each other. At night all cats are grey — without material evidence we cannot distinguish.
A Piedmontese wine merchant on undisclosed origins
Senza etichetta, chi distingue un Barolo vero da un Barbera rietichettato? At neuit tüi i gat a son grigio — per questo esistono i controlli.
Without a label, who can tell a real Barolo from a relabelled Barbera? At night all cats are grey — that is why controls exist.
Two elderly Torinesi on a foggy evening
Con questa nebbia non si vede a due metri. At neuit tüi i gat a son grigio — meglio restare a casa e aprire il Barolo.
In this fog you cannot see two metres ahead. At night all cats are grey — better stay home and open the Barolo.
A Torinese grandmother on appearances
— È abbronzata e truccata, sembra bellissima. — At neuit tüi i gat a son grigio, cara. Aspetta a giudicare al mattino.
— She is tanned and made-up, she looks beautiful. — At night all cats are grey, dear. Wait to judge in the morning.