How does the characterization of Caesar in this passage connect to the central idea of the passage?

By reflecting on Caesar’s position in society, Brutus decides to report the conspiracy to Caesar and join him on ambition’s ladder.
When Brutus realizes the power that ambition brings, he decides to kill Caesar and Cassius in order to successfully climb the ladder.
Brutus decides to join the conspiracy against Caesar because he fears that Caesar will become ruthless once he climbs ambition’s ladder and has absolute power.
Brutus decides that he must cut the legs off from the ladder to prevent Caesar and Cassius from stepping on anyone along the way.