If you reach your goal, the end always justifies the means.

I have to disagree with this statement. Even if in the end you do reach your goals it does not always justify the means by which you have to get there. If you go out and kill someone to achieve your dream for instance not only have you prohibited someone else from achieving their dreams but you also have destroyed your reputation for being honest and caring. In Macbeth for instance. He kills the king to insure his place at the throne. In the end he achieved his goal of becoming king, but it does not make killing someone to achieve it right or make it okay.