"The world isn’t perfect, and the law is incomplete. Equivalent Exchange doesn’t encompass everything that goes on here. But I still choose to believe in its principle: that all things do come at a price. That there’s an ebb, and a flow, a cycle. That the pain we went through did have a reward and that anyone who’s determined and perseveres will get something of value in return, even if it’s not what they expected."

Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost. That is the law of equivalent exchange.