What is the nature of the human life?

Briefly, those are the aims of your life. As for the nature of your life, it can be summarized as follows:

It is an index of wonders originating in the Divine Names, and a measure to consider the Divine Attributes, and a unit to know the worlds in the universe, and a catalogue of the macrocosm, and a map of the universe and its fruit or compressed form. It is a bunch of keys with which to open the hidden treasuries of the Divine Power, and a most excellent pattern of the Divine perfections reflected in creatures and manifested through time.

The following is to describe the apparent, observable form of your life and its meaning:

Your life is a word inscribed, a wisdom-displaying word written by the Pen of Power. Observed and sensed, it points to the Divine Beautiful Names.