Which of these lines from the play indicates that brutus fears giving caesar power will make him dangerous?

"think him as a serpents egg/ which, hatched, would as his kind grow mischievous"

"it must be by his death, and for my part/i know no personal cause to spurn at him"

"but is a common proof/that lowliness is young ambitions ladder,"

"and, to speak truth of caesar/i have not known when his affections swayed/more than his reason."