From the moment we are born, we cannot live alone. We stand in constant need of assistance from all around us. We need clothes that others make; houses which others build and food which others produce. We have to get our livelihood by working for others, while others get their livelihood in return by working for us. As children we need our parents to comfort us, take care of us and guide us. We cannot exist a day without our fellowmen. We require teachers to educate us, doctors to take care of our health and wellbeing, and traders and grocers to supply us with our daily necessities. We need friends to stand by us in hard times and to share our joy. Even the bus or train drivers we hardly notice help us move around and ensure that we have mobility in our lives.