/ http://www.slideshare.net/images/logo.gif / 狠狠撸Share feed for 狠狠撸shows by User: liakolita https://cdn.slidesharecdn.com/profile-photo-liakolita-48x48.jpg?cb=1523605711 Humankind can not obtain anything without first sacrificing something. In order to obtain anything something of equal value is required. That is Alchemy's law of equlivant exchange. At the time we believed that to be the true way of the world.