Martin Luther King said this statement. An individual has not started living until he can rise above the narrow confines of his individualistic concerns to the broader concerns of all humanity.
This is meaning that no one can really live life until he can go pass normal life.. When that person is above everyone else their was really lived.. To me thats what this means even though it might not be right, but if so i agree with this you have not lived your life until you or on top, like living your dream and not just on the streets doing nothing..
