Aw this really sucks. I read some of Terrence and Dennis's writings a few years ago. They were both phenomenal thinkers and did an amazing amount of research into hallucinogenic drugs.
While such drugs are not for a highstrung person such as myself, I sincerely believe that there is much to learn from how the human body interacts with them.
And these guys were probably the most knowledgeable persons on that front.
To hear that Terrence's library burned is really disheartening.
Terrence McKenna's Ex-Library