VULCAN CAPTAIN VANIK, "Breaking the Ice" (2001)
We don't know what to do about humans. Of all the species we've made contact with, yours is the only one we can't define. You have have the arrogance of Andorians, the stubborn pride of Tellarites. One moment you're as driven by your emotions as Klingons, and the next, you confound us by suddenly embracing logic.
VULCAN AMBASSADOR SOVAL, "The Forge" (2004)
Doubt is the basis of all scientific progress.
SUB-COMMANDER T'POL, "Chosen Realm" (2004)
We're going to stumble, make mistakes, I'm sure more than a few before we find our footing, but we're going to learn from those mistakes. That's what being human is all about.
CAPTAIN JONATHAN ARCHER, "Shockwave: Part 2" (2002)
No great victory comes without sacrifice.
COMMANDER SHRAN, "Proving Ground" (2004)
Rule of Acquisition number 23: Nothing is more important than your health, except for your money.
ULIS, "Acquisition" (2002)