Unlike the being of all other beings, man knows himself as being exposed, challenged, judged, encountered. To be human is to be a problem. Is the wondering, wrestling, searching, and quandry a self-inflicted disease ? Eliminate the challenge, the wrestling, and man will be deprived of his humanity. Being challenged is not man-made, an attitude, an awareness; it is an essential mode of being.

A.J.Heschel, Who is Man ? Stanford U Press. p. 104 -105, to be continued....