A set of assumptions, concepts, values, and practices that constitutes a way of viewing reality for the community that shares them.William Blake (18 century poet and philosopher) summed it up perfectly with the following lines from his epic poem 'Jerusalem' in which he said:"I must Create a System, or be enslaved by another Man's; I will not Reason and Compare; my business is to Create."The author Robertson Davies was even more brutally honest in his book 'The Deptford Trilogy ' (p477), when he said:"Be sure to choose what you believe and know why you believe it, because if you don't choose your beliefs, you may be certain that some belief, and probably not a very creditable one, will choose you." What all this means is that a person should embrace ideas and beliefs that sit well with him or her at the present time, whilst keeping in mind that as awareness about reality expands with the advent of new experiences, so must one's concept of reality change accordingly.