In this case the word is more particularly a philosophical term. But it was used in a similar sense also in popular language, and corresponds then closely to the English “denier of God,” denoting a person who denies the gods of his people and State. From the popular point of view the interest, of course, centred in those only, not in the exponents of philosophical theology. Thus we find the word employed both of theoretical denial of the gods (atheism in our sense) and of practical denial of the gods, as in the case of the adherents of monotheism, Jews and Christians. Atheism, in the theoretical as well as the practical sense of the word, was, according to the ancient conception of law, always a crime; but in practice it was treated in different ways, which varied both according to the period in question and according to the more or less dangerous nature of the threat it offered to established religion. It is only as far as Athens and Imperial Rome are concerned that we have any definite knowledge of the law and the judicial procedure on this point; a somewhat detailed account of the state of things in Athens and Rome cannot be dispensed with here. In the criminal law of Athens we meet with the term _asebeia_—literally: impiety or disrespect towards the gods. As an established formula of accusation of _asebeia_ existed, legislation must have dealt with the subject; but how it was defined we do not know. The word itself conveys the idea that the law particularly had offences against public worship in view; and this is confirmed by the fact that a number of such offences—from the felling of sacred trees to the profanation of the Eleusinian Mysteries—were treated as _asebeia_. When, in the next place, towards the close of the fifth century B.C., free-thinking began to assume forms which seemed dangerous to the religion of the State, theoretical denial of the gods was also included under _asebeia_. From about the beginning of the Peloponnesian War to the close of the fourth century B.C., there are on record a number of prosecutions of philosophers who were tried and condemned for denial of the gods. The indictment seems in most cases—the trial of Socrates is the only one of which we know details—to have been on the charge of _asebeia_, and the procedure proper thereto seems to have been employed, though there was no proof or assertion of the accused having offended against public worship; as to Socrates, we know the opposite to have been the case; he worshipped the gods like any other good citizen. This extension of the conception of _asebeia_ to include theoretical denial of the gods no doubt had no foundation in law; this is amongst other things evident from the fact that it was necessary, in order to convict Anaxagoras, to pass a special public resolution in virtue of which his free-thinking theories became indictable. The law presumably dated from a time when theoretical denial of the gods lay beyond the horizon of legislation.