Meaning of all cats are grey in the dark in English:

all cats are grey in the dark

(US at night all cats are gray)

phrase

proverb
  • The qualities that distinguish people from one another are obscured in some circumstances, and if they can't be perceived they don't matter.

    ‘Franklin says that just as all cats are grey in the dark, all women would be the same for pleasure.’
    • ‘The old adage that at night all cats are gray is in fact quite true.’
    • ‘The sole bit of worldly advice my mother ever gave me was that all cats are grey in the dark.’
    • ‘Besides, don't they say that all cats are grey in the dark?’
    • ‘I have no memory of the RAF teleprinter Room but I can only suppose that, on the principle that all cats are grey in the dark, I was so used to seeing teleprinters in action that I didn't find it surprising unless the uniforms were a different colour.’