Although it says much about leadership, Shakespeare's play allows us little information on how his Julius Caesar defines law. However, we might find a clue in Caesar's answer to Decius's question concerning what he should explain to the Senate concerning Caesar's decision not to go on the Ides of March.  "Let me know some cause," says Decius, and Caesar answers "The cause is in my will. I will not come:/That is enough to satisfy the Senate" (2.3.69-72).  Caesar has begun to equate Rome with himself, and in being Rome, he is the law of Rome:  he need not explain himself to anyone.  Of course Decius convinces him otherwise.  Caesar goes to the Senate and is assassinated, and in the power vacuum that results, chaos breaks loose. In a sense, then, Caesar was correct in that order collapses (and law provides order) when Caesar dies.