She felt like crying but nothing came out. It was just a sort of sad sicknees, sick sad, when you can't feel any worse. I think you know it. I think everybody knows it now and then. But I think I have known it pretty often, too often.

is how souls learn to ignite fire.

And just like that, I realized that my old scars never truly healed,
because they bled again at a single word.

In maths: an equation
In chemistry: a reaction
In history: a war
In geography: a place
In life: everything