The subject is a question.  The human being is not an animal: it is a question.  Its sickness and struggle is a breach in an otherwise smooth-functioning system of command.   This is well known.  What is more difficult is to keep the attention focussed on the fact that the human subject is more than one question.  It is a question that leads to more questions, like the kingdom of ends in Aristotle, or like the famous Burroughs quote about problems:  no problem is ever solved; all solutions lead to more problems.   The fact is, maintaining a certain rationalism would entail recognizing that the question of the human sends the questioner along a chain of questions that demands an ultimate payoff at the end: an ultimate satisfaction that, although it is abstract in a sense, can be conceived as something quite concrete.  A state of affairs such that things have turned out to have been worth it.