Could I be a doctor/lawyer/mother...?
Humanity is the patient that needs healing. Humanity is the client that needs a voice. Humanity is the child that needs nurturing.
If our actions go beyond ourselves and our near and dear ones, we begin to impact a larger being, that is humanity. If we nurture others with love and kindness, then we are a mother to humanity. If we speak for those who have no voice, then we are advocating for humanity. If we care for the sick and infirm, we are doctors to humanity.
If each one of us played these roles, and dispensed more love and understanding, there would be less strife, hunger, poverty and discrimination in the world. This would also be a legacy of peace and happiness for generations yet unborn.