That is...

LIVE LONG AND PROSPER!

(Vulcan DUP DOR A'AZ MUBSTER)

To know more about the Vulcan salute, click here; to learn some Vulcan words and their meanings/translations, go here (pay particular attention to kolinahr!!! Maybe we should all try to attain such level, sometimes...)

And...

this is for you, Diva Flower Nakamura!