I think it is:
All work and no play makes Jack a dull boy.
The meaning is clear I think.
But the French translation you give is incorrect. Maybe there is no French proverb that corresponds to this one. If I remember correctly, the meaning of the proverb wasn't really that important. What was more important was that it was a proverb, a pre-fabricated sentence he kept typing over and over. So, seeing that there was no French equivalent, the translator put in another proverb.