I don't know anything
I don't know anything about that.
I don't know anything about you.
En fait, je ne sais rien d'autre à leur sujet.
Actually, I don't know anything else about them.
— Le Loup de Wall Street (2013)
I don't know anything about that.
Et pourtant, quand j'y réfléchis, je ne sais rien de lui.
And yet, when I think about it, I know nothing about him.
— La Chute (2004)
I don't know anything about her.
I don't know anything about you.
Apart from that, I know nothing.
Je sais une chose, c'est que je ne sais rien.
One thing I know is that I know nothing.