Nevertheless, in the trial of Socrates it is simply taken for granted that denial of the gods is a capital crime, and that not only on the side of the prosecution, but also on the side of the defence: the trial only turns on a question of fact, the legal basis is taken for granted. So inveterate, then, at this time was the conception of the unlawful nature of the denial of the gods among the people of Athens. In the course of the fourth century B.C. several philosophers were accused of denial of the gods or blasphemy; but after the close of the century we hear no more of such trials. To be sure, our knowledge of the succeeding centuries, when Athens was but a provincial town, is far less copious than of the days of its greatness; nevertheless, it is beyond doubt that the practice in regard to theoretical denial of the gods was changed. A philosopher like Carneades, for instance, might, in view of his sceptical standpoint, just as well have been convicted of _asebeia_ as Protagoras, who was convicted because he had declared that he did not know whether the gods existed or not; and as to such a process against Carneades, tradition would not have remained silent. Instead, we learn that he was employed as the trusted representative of the State on most important diplomatic missions. It is evident that Athens had arrived at the point of view that the theoretical denial of the gods might be tolerated, whereas the law, of course, continued to protect public worship. In Rome they did not possess, as in Athens, a general statute against religious offences; there were only special provisions, and they were, moreover, few and insufficient. This defect, however, was remedied by the vigorous police authority with which the Roman magistrates were invested. In Rome severe measures were often taken against movements which threatened the Roman official worship, but it was done at the discretion of the administration and not according to hard-and-fast rules; hence the practice was somewhat varying, and a certain arbitrariness inevitable. No example is known from Rome of action taken against theoretical denial of the gods corresponding to the trials of the philosophers in Athens. The main cause of this was, no doubt, that free-thinking in the fifth century B.C. invaded Hellas, and specially Athens, like a flood which threatened to overthrow everything; in Rome, on the other hand, Greek philosophy made its way in slowly and gradually, and this took place at a time when in the country of its origin it had long ago found a _modus vivendi_ with popular religion and was acknowledged as harmless to the established worship. The more practical outlook of the Romans may perhaps also have had something to say in the matter: they were rather indifferent to theoretical speculations, whereas they were not to be trifled with when their national institutions were concerned.