Duncan was convinced he had contracted these symptoms as a result of his encounter with the Machine. I was convinced the “violent mood swings” had nothing to do with his fungal affliction and everything to do with a malady known as “Mary Sabonitis.”

Luckily for their relationship, which otherwise might have been punctuated by episodes more suited to a madhouse or a sick house than an institution of learning, the symptoms came and went like the summer storms that had always plagued Ambergris. (Ironic, that. Because now there is no slower turning to the world than with this disease, this gift in flux, in flow. I might as well be turning into a tree, putting down roots. The yearning in my flesh calls out to the yearning in the ground. Nothing can be made that is not a part of me, that will not eventually become me. “I want for nothing and hunger naught,” as some crackpot old saint named Tonsure once said before they buried him underground.)

Admittedly, his disease sometimes brought with it great joy, no doubt also caused by the fungi. An episode during the second year of his affair with Mary best describes the extremity of effects that his body could force from him:

I felt a slight disorientation that morning when I woke in my teacher’s quarters. A kind of half-hearted dizziness, a prickling in the skin: a harbinger of encroaching symptoms. However, the sensation faded, so I went to my classes anyway. I remember seeing Mary in the back row of my “Famous Martyrs” class at the exact second that my mouth went as dry as the blackboard. I remember thinking it was just her presence that had affected me. For the first twenty minutes I was fine, livening up my lecture by telling some old jokes about Living Saints that Cadimon Signal had related to me at the religious academy in Morrow. Then, suddenly, I could feel the spores infiltrating my head, my limbs—they clambered over my sinuses, got between me and my own skin. I couldn’t breathe. I couldn’t move. The spores began to seethe across my eyes, bringing a stinging green veil over my sight. I did the only thing I could do, the thing I have learned to do, still the hardest thing. I relaxed my arms, my legs, my neck, my head, so that I entrusted my balance to the fungi … and damned if I didn’t stay up. Damned if I didn’t continue to live, although I felt like I was drowning. I sweated from every pore. I felt nauseous, disoriented, dizzy. I felt as if the gray caps were searching for me across a vast distance—I could feel their gaze upon me, like a black cloud, a storm of eyes … and still the tendrils spread across my vision, blinding me … and then, as soon as they had finished their march from east and west, meeting somewhere around the bridge of my twitching nose, all of the discomfort faded and I could … breathe again. Not only could I breathe, but I was flying, soaring, my body as light as a single spore, and yet so powerful that I felt as if I could hold up the entire Academy with one hand. A fierce joy leaked into me, sped from my feet to my waist to my arms, my head. I could not have been happier had I been the sun, shining down on everyone from on high. And in that happiness, I did not even really exist, except as a connection, a bridge, an archway, linked with a hundred thousand other archways that extended up and down my body in a perfect crisscrossing pattern of completeness. And I cannot help feeling, even as the spores just as suddenly relinquished their hold and left me gasping and white, that what radiated into me was a thank-you from the thousands that comprise the invisible community that has become my body. (Later, Mary told me that I had kept talking through the entire episode, albeit with slurred speech.)