Q: Perhaps maybe a little, uh, Hamlet?
Capt. Picard: Oh, I know Hamlet. And what he might say with irony, I say with conviction: "What a piece of work is man! How noble in reason! How infinite in faculty! In form, in moving, how express and admirable! In action, how like an angel! In apprehension, how like a god!"
Q: Surely, you don't see your species like that, do you?
Capt. Picard: I see us one day becoming that, Q. Is it that which concerns you? ("Hide and Q")

Capt. Picard: The first duty of every Starfleet officer is to the truth, whether it's scientific truth or historical truth or personal truth! It is the guiding principle on which Starfleet is based! And if you can't find it within yourself to stand up and tell the truth about what happened, you don't deserve to wear that uniform! I'm going to make this simple for you, Mr. Crusher. Either you come forward and tell Admiral Brand what really took place, or I will. ("The First Duty")