Memorable quotes from my fics? Hmm... This is hard to decide, there are a lot of quotes from them that I like. xP
For example, the fight between Soren and Ranulf over who would be best man in Ike and Elincia's wedding in Fire Emblem: Dawn of Darkness is pretty memorable lol. It's downright hilarious. XD
An example of a different sort of memorable conversation from the same story would be the one between Bryan and Faline during the evening the group stayed in Fort Hector. They explain why they fell in love with one another and Faline makes an interesting confession.
Lastly, a quote from Leyon during chapter 28. He tells Azura "The best leaders aren't the ones who never make mistakes, because that's not possible. The best leaders are the ones who learn from their mistakes. You did that, better than that, in fact, by figuring out how to help me get my memory back. You took responsibility for what went wrong and you put it to rights. That is what makes a leader." My co-author actually came up with this one, but it's still awesome, imo.
There are some memorable quotes in my Zelda fic as well, btw. In fact, I think the best comes from a lone diary entry Judo left behind. It causes Kelli to get very emotional since he's her childhood best friend. Judo tells her that he's going to stay strong and make her proud and such.
Navi also has some funny lines since she loves to tease Link. :P
Of course, since these stories aren't finished yet, there will be more memorable quotes to come! :D
Lastly, memorable quotes in My Conquest, the Cilan fic I mentioned earlier. Simply put, I liked "This is what I must do. This is my conquest." best. The line that makes the title and the story itself.
I'd bring up some memorable quotes from my Super Luigi fic as well, but I haven't posted it yet.