I suffered from a quite severe speech impediment when I was young, and keeping a journal was part of the therapy.
The heart was always seen as the noblest of the internal organs as well as the most vital. The hearts of martyrs or future candidates for sainthood would be preserved, but never their livers, say, or the entrails – at least not on their own; it was either the heart by itself or the whole lot together.
There are many thousands of books on particular assassinations and on the subject in general, but nearly all of them deal with the victims, not the perpetrators.
Poets are accepted in Canada as practically nowhere else in the West because of their place in an officially supported and popularly endorsed Canadian culture. Yet, they are still bitter and argumentative, as poets elsewhere are, because they have no audience as such, only a sanctioned role in the cultural scheme of things.