In The Night's Dawn Trilogy, the Ly-Cilph are an alien race that evolved on an unnamed moon orbiting a gas giant planet. The unstable nature of the Ly-Cilph's homeworld's orbit meant that every nine years, the moon was consumed by violent storms. Millennia of evolution meant that even while the Ly-Cilph's corporeal bodies were destroyed, they transcended to a state of higher existence.

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Ly-Cilph - Culture
... Due to the impermanent landscape of their home, the Ly-Cilph do not build structures or tools of any kind ... The primary goal of the Ly-Cilph is to gain knowledge ... After they transcend, most Ly-Cilph travel throughout the universe, observing other civilisations and phenomena ...