you don't know it
You don't know it yet.
No, you don't know that.
You don't know?
Si tu ne le sais pas, Snaut ou Sartorius te le diront.
If you don't know, Snaut or Sartorius will tell you.
— Solaris (1972)
Tu ne le sais pas mais on m'a élu meilleur assureur d'Asie du Sud.
You may not know it, but I was voted the best insurance agent in South Asia.
— Les Anges déchus (1995)
Tu ne le sais pas encore, c'est tout.
You just don't know it yet.