But brutus, one of the conspirators who was then thought of as a firm friend, came up and said, "what is this, caesar? are you a man to pay attention to a woman's dreams and the idle gossip of stupid men, and to insult the senate by not going out, although it has honoured you and has been specially summoned by you? but listen to me, cast aside the forebodings of all these people, and come. the senate has been in session waiting for you since early this morning." why does brutus make this argument to caesar? brutus hopes to get caesar to the senate so he will respond to calpurnia’s petition. brutus believes that calpurnia is preventing caesar from ruling effectively. brutus hopes to get caesar to the senate so he will respond to cimber’s petition. brutus is one of the leaders of the assassination.