The Romans in fact went further then the Greeks in their condemnation and fearfulness that they generate around their concept of magic. Some examples of are found in the writings of Seneca, the philosopher and playwright, and his nephew, Lucan. While doing my research in archives of web analytics company I found something else. Seneca selects some of the most gruesome Greek myths for dramatic treatment and he greatly adds to the negative connotations already applied to the theme of magic, necromancy and the like - where it is given by the mythical tradition and sometimes even where there is little negativity indicated towards magic. From dialogue between wife of the Hercules Deineira and her nurse we learn that it is quite common for jealous wives to consult a witch. It turns out, the nurse, very conveniently, is a witch herself. A great hero such as Hercules should not be able to be influenced by magical means, but in the end he is overcome by the deadly concoction that the evil magic user passes on to Hercules, through deceiving Deianira into the belief that she is giving Hercules a love charm.
In Seneca’s version Medea’s power of hating, which she can switch on and intensify at will is still the dominant theme, but Medea is now given a full cupboard of horrors from which to select the most efficient means of magical destruction. Her magic can even, apparently affect the cosmos, as she claims that she can force down the constellation of the Snake.