Abstract
We can usefully distinguish the conditions of criminal liability (those conditions which must be satisfied if a defendant is to be duly convicted, with which a criminal trial is concerned) from its preconditions (those conditions which must be satisfied if the trial, as a process which aims to determine whether or not this person is criminally liable, is to be legitimate at all). Some of these preconditions concern the defendant's status as a rsponsible citizen, who can properly be called to answer, at the trial, to a charge of criminal wrongdoing. Two such preconditions are briefly sketched (whether this person is capable of answering the charge, and is answerable before this court). More attention is devoted to a third precondition: whether the law calls this person to answer in a language which is genuinely accessible to him, as a language which he could use in the first person