没有付出就什么也得不到,要想得到什么就必须付出同等的代价,这就是炼金术的等价交换原则,那个时候我们深信这是世界的真理.
There is nothing can be gained if there is no paying ,something that we want to get must be exchanged with equal price that we expending .It is the equally exchanged principle of alchemy ,we deeply believed the truth of world at that time .