Ad impossibilia nemo tenetur (À l'impossible nul n'est tenu) - on ne peut exiger de quiconque ce qu’il lui est impossible de faire.
Image par Renjith Krishnan
... when school is over for the holidays? Answer: watch Law and Order of course! Now that's a great way to keep in touch and make sure I don't lose those precious gray cells. Too bad I don't learn criminal law yet.