"It's elementary, my dear Watson."
"It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth."

by @Fran!!!

Let it be fun, let be free ;)

It's kind hard to pick a motto...I mean there are some many great lines and still none represents them completely. There's the sexual tension yeah, but also the love and the amazing soul connetion, so I'll go with my favourite, which is not a Huli quote but I think it's seriously the most poetic thing that has never been said about them =,)

"In many ways Hugh Laurie gets to be the sun around which the show revolves, but the sun can’t be fully appreciated unless it’s contrasted with the moon. Edelstein is the moon to Laurie’s sun...she reflects his light in a way that grows her character and his"