There's no such thing as a painless lesson. They just don't exist. Sacrifices are necessary. You can't gain anything without losing something first although if you can endure that pain and walk away from it, you'll find that you now have a heart strong enough to overcome any obstacle. Yeah, a heart made fullmetal.
Hiromu ArakawaHumankind cannot gain something without first giving something in return. To obtain, something of equal value must be lost. This is Alchemy's First Law of Equivalent Exchange. In those days, we really believed that to be the world's one, and only, truth.
Hiromu Arakawa