While it is true that man’s productiveness can create material things, works of art, and systems of thought, by far the most important object of productiveness is man himself.
Birth is only one particular step in a continuum which begins with conception and ends with death. All that is between these two poles is a process of giving birth to one’s potentialities, of bringing to life all that is potentially given in the two cells. But while physical growth proceeds by itself, if only the proper conditions are given, the process of birth on the mental plane, in contrast, does not occur automatically. It requires productive activity to give life to the emotional and intellectual potentialities of man, to give birth to his self. It is part of the tragedy of the human situation that the development of the self is never completed; even under the best conditions only part of man’s potentialities is realized. Man always dies before he is fully born.