Likely, the first word most of us heard.
And likely, the first word most of us will utter.
The word we’ll always remember.
The one that hurt the most.
The one we needed to hear.
The one that is usually uttered just a little too late.
The one heard shouted across a field.
The one show of raw emotion in an otherwise sterile world.
No.
A Daily Dose of Zen Sarcasm! 
Virgil: Teacher only reverted to type under provocation. He spoke like a slavemaster in the old days of our servitude when we were conditioned to mechanical obedience. He uttered a negative imperative.
Caesar: Could you put that into words which even Caesar could understand?
Virgil: He said, “No, Aldo, no!”