First there were rocks and they were forever, and then later on I learned that rocks retained human scent inside them, and that they contained infinite wisdom as well. Also, the say that rocks are having pieces of heaven inside them, and as such, they are unisex. They can give birth, they are always, in all times, and as such, with engraved messages, they are becoming eternal foundations of temples of static and unchangeable life.
They thunder with strength of the unchangeable but yet again, they have an unknown number of messages and permutations. They are secrets to be revealed to those whose time is up and then they turn into soul. And soul, as we all know, is forever.