EEd
Sure, he's strong, after all...
All S1
S1 E15Unfinished Business
Alphonse (Introduction, episodes 2-41): Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost. That is alchemy's first law of Equivalent Exchange. In those days, we really believed that to be the world's one, and only truth.
Edward (Introduction, episodes 43-51): The Philosopher's Stone: those who possess it, no longer bound by the laws of equivalent exchange in alchemy, can gain without sacrifice... create without equal exchange. We searched for it... and we found it. (This line is Alphonse's in the original. It is only given to Edward in the dub.)
Can I eat him?
Fuzake n Na! (Could be considered a catch phrase of sorts, as Edward is constantly heard saying it. It's a very informal, masculine way of using the verb "Fuzakeru" which means 'Joke', 'tease', 'lie', etc. Basically it means "Don't kid around", though based on the circumstances, it can translate to anything from "Don't screw with me!", "Cut it out!", "You bastard!", or as sometimes translated in fan works, "Don't fuck with me!" In the dubbed anime, it is mostly commonly translated as "Stop jerking me around!")
In chronological order to the anime/manga.
These quotes come from Wikiquote's Fullmetal Alchemist pages and are available under the Creative Commons Attribution-ShareAlike License.