O' my word, the father's son! I'll swear 'tis a
very pretty boy. O' my troth, I looked upon him o'
Wednesday half an hour together. H'as such a
confirmed countenance. I saw him run after a gilded
butterfly, and when he caught it, he let it go again,
and after it again, and over and over he comes,
and up again, catched it again. Or whether his fall
enraged him or how 'twas, he did so set his
teeth and tear it. O, I warrant how he mammocked it!
One on 's father's moods.
Indeed, la, 'tis a noble child. (1.3.60-70)
It's not just the violence and rage of warfare that's associated with masculinity in this play. Here, we see that everyday violence (like young Martius becoming "enraged" and gnashing a butterfly between his teeth) is considered typical behavior for men and young boys.