“Consider the Lichen. Lichens are just about the hardiest visible organisms on Earth, but the least ambitious.”

“Of what a strange nature is knowledge! It clings to a mind when it has once seized on it like a lichen on a rock." - Frankenstein p115”

“Sarah took a deep breath and set off along the passageway again. A clump of lichen on the gatepost opened its eyes and watched her go. The eyes, on tendrils, had an anxious look, and when she had gone some distance away the clump, swiveling its eyes toward each other, commenced to gossip among itself. Most of it disapproved of the direction she had taken. You could tell that from the way the eyes looked meaningfully into each other. Lichen knows about directions. ”

“The minds of stone lovers had colonised stones as lichens clung to them with golden or grey-green florid stains. The human world of stones is caught in organic metaphors like flies in amber. Words came from flesh and hair and plants. Reniform, mammilated, botryoidal, dendrite, haematite. Carnelian is from carnal, from flesh. Serpentine and lizardite are stone reptiles ; phyllite is leafy-green.”

“It is easy to overlook this thought that life just is. As humans we are inclined to feel that life must have a point. We have plans and aspirations and desires. We want to take constant advantage of all the intoxicating existence we've been endowed with. But what's life to a lichen? Yet its impulse to exist, to be, is every bit as strong as ours—arguably even stronger. If I were told that I had to spend decades being a furry growth on a rock in the woods, I believe I would lose the will to go on. Lichens don't. Like virtually all living things, they will suffer any hardship, endure any insult, for a moment's additional existence. Life, in short, just wants to be.”

“Second-hand American was spreading over him in patches, like mange or lichen. He was infested, garbled, and I couldn't help him: it would take such time to heal, unearth him, scrape down to where he was true.”