What does it mean to be a man?

To me a man is standing up for not only what you believe in but also doing whats right for your family. I do not agree with Lady Macbeth if she were a woman then she would not be forcing her husband to murder the king. In fact if Macbeth were a man then he would have stood up to his wife and said how he truly felt. I feel that a man should always be minded of his own personal feelings.