The question of lightning isn’t just one of beauty in nature. Lightning, like many natural phenomena, can be incredibly useful. It is used to measure distances and can even be harnessed for energy production.
Ideas, too, can be dangerous things. It is important to be mindful of the power of our own ideas and how they can be used for good, or for… not good (evil, ill, whatever).
Ideas are spontaneous. Uncontrollable. Even the smallest spark of a thought can become a full blaze, igniting those who come into contact with it. Ideas can take on a life of their own and spread quickly, regardless of our intentions.
Much like lightning, ideas can be dangerous when made contact with. And beauitful.