"(About the Murder of Giulia Cecchettin) *What strikes me is that this guy probably had significant psychological issues, of a narcissistic nature. [...] He was unable to come to terms with the end of the relationship and felt inadequate compared to Giulia. Because she had achieved her goals and he hadn't. Clearly, there was a kind of direct competition between the two. Giulia didn't see it or understand it, but Filippo did. And all this happened just before Giulia graduated. A time when she would certainly have spread her wings and started her own career. A definitive end, therefore, to that relationship, which he could not tolerate."
January 1, 1970
https://en.wikiquote.org/wiki/Roberta_Bruzzone