you know nothing
Tu ne sais rien à propos de moi.
You don't know anything about me.
Je connais ce garçon dont tu ne sais rien.
I know that boy you know nothing about.
Plus tu en sais et plus tu comprends que tu ne sais rien.
The more you know, the more you understand that you know nothing.
You don't know a thing.
No, you don't know anything.
Toi qui sais tant de choses, en fait, tu ne sais rien.
You who think you know so much, in fact, you know nothing.
— Les Fraises sauvages (1957)
You don't know anything about her.