Abstract

This paper will examine the circumstances that inspired the famous utterance attributed to the haruspex Spurinna, ‘Beware the Ides of March!'1Recently the argument has been made that this warning to Caesar was based upon an astrological calculation, rather than on the usual arts of an haruspex who read signs of the future by inspecting the entrails of sacrificial animals (exta) or by interpreting bolts of lightning (fulgura) and portents (ostenta). As intriguing as this astrological theory is, I am convinced that it is fatally flawed, and I intend to show why it must ultimately be rejected. The question is not merely an academic one, having to do with the methods employed by a particular seer on a given occasion. Rather, if it can be established as even probable that Spurinna based his prophecy upon an astrological calculation, which helped convince the conspirators that Caesar was vulnerable to attack on the Ides as being an unlucky day for him according to the stars, then we are presented with a very significant and hitherto unsuspected instance of astrology influencing the course of public affairs at Rome several decades before astrology came into its own under the early emperors. According to such a reconstruction, astrology played a key role in determining the date of one of the most fateful murders in Roman history. It is the contention of this paper, on the contrary, that there is no reason whatsoever to attribute Spurinna's prophecy to an astrological calculation.