Strength

In general, strength, as personified in the United States, is a very manly figure who can take care of himself and doesn't take shit from anybody. As good as not taking shit from people may be, it also leads to ignorance when this brawny, rugged character starts thinking he doesn't have to listen to anyone, because he's always right, which makes him very mentally weak, so I tend to disagree with this stereotype. I feel like strength should be represented by someone with a strong moral character, not just colossal biceps.

In Nietzsche, this moral person exactly represents his idea of strength. This person has the ability to make things happen for him or herself, without having to bend to other people's wills. This person has the focus and the will power to achieve what they want without second-guessing themselves, so they don't need to have the brawn to intimidate people.