In Acts I and II, we get the impression that Caesar is ambition and proud. Though the people praise him for his valor and leadership, the Tribunes, and Cassius specifically, are concerned that his power is quickly going to his head. They fear that he will become a tyrant, and his words themselves seem to verify this. For example, when the conspirators approach Caesar in Act III, drawing near to him by petitioning for Cimber's brother to be restored from his banishment, Caesar responding by saying how constant and unmovable he is, and then compares himself to the North Star in his steadfastness. Such a response speaks to the pride and haughtiness of Caesar's character, making the audience feel that the fears of Brutus, Cassius, and the other conspirators are well founded.