Socrates (469–399 B.C.E) was a popular Greek philosopher who believed that all humans were automatically born with good virtues.
In other words, the line can be understood in the view of Socrates as saying 'the good deeds hidden within a person only need to be opened up not taught,' which includes such deeds as honesty, generosity, kindness, etc.
I think that it is Brutus's guilty soul and that it has taken over his dreams. I think this because<span>it say Brutus's evil spirit which lead me to beileve guilty soul.</span>