Journal 10

Yes, there is no other alternative.  His army stands no chance now that Cassius has commited suicide and if he is captured he will most likley be tried for treason by Anthony and the government.  Although Brutus is honorable, he cannot trust everyone to be as honorable as he would be.  He has masde that mistake multiple times in this play.  This is difficult because he is so honorable, but it is un avoidable.