What does 'Caesar introduced new loss' mean

The first conspirator greeted Caesar, then plunged a knife into his neck. Other stabbers followed suit. One by one, several members of the Senate took turns stabbing Julius Caesar (100-44 B. C. E.), the dictator of the entire Roman Empire.

Stunned that even his good friend Brutus was in on the plot, Caesar choked out his final words: "'kai su, teknon?" ("You too, my child?").

On the steps of the Senate, the most powerful man in the ancient world died in a pool of his own blood.

Explanation:

Julius Caesar

In William Shakespeare's play Julius Caesar, the title character manages to utter "Et tu, Brute?" ("and you, Brutus?") as he is slain. This is not historically accurate.

According to the 1st century C. E. Roman historian Suetonius, Julius Caesar spoke mainly Greek and not Latin, as was the case with most patricians at the time. In his history about the life of Julius Caesar, Suetonius writes that as the assassins plunged their daggers into the dictator, Caesar saw Brutus and spoke the Greek phrase kai su, teknon, meaning "you too, my child."

There is still debate whether or not it was shouted in shock or said as a warning. On one hand, Caesar may have been amazed to find a close friend like Brutus trying to kill him; on the other hand, he may have meant that Brutus would pay for his crime in the future for this treachery. Either way, the words were Greek, so leave "Et tu, Brute" for Shakespeare.