What is the meaning of this Julius Caesar quote?

“If then that friend demand why Brutus rose against Caesar,this is my answer: not that I loved Caesar less but that I loved Rome more. Had you rather Caesar were living and die all slaves then that Caesar were dead to live all free men? As Caesar loved me I weep for him as he was fortunate I rejoice at it.As he was valiant I honour him.But as he was ambitious I slew him There is tears for his love joy for his fortune honour for his valour and death for his ambition.