Ebert nominates women:
Women value common welfare above singular success. Women are more open to cooperation than competition. Women have evolved to focus more on prudent long-term survival, and less on immediate gains. When women give birth and spend months suckling an infant, they understand better that we all depend on each other. They're programmed to nurture the defenseless, plan for the future, value others for their qualities rather than for their externals.
Jill Filipovic sighs:
Most people have the capacity to be wonderful, non-violent, nurturing and loving. Most people also have the capacity to be competitive, driven, aggressive and ruthless. Most people are capable of great kindness; most people are capable of being total assholes. The degree to which any of us displays any of these traits depends largely on circumstance and partly on individual personality and temperment. Those things are certainly influenced by gender, but our gender does not in fact hard-wire us to be nice or awful.