Divine Knowledge is the Only Reality...

The wise of all ages have taught that it is knowledge of the divine Being that
is life, and the only reality.

Bowl of Saki, by Hazrat Inayat Khan

Commentary by Pir-o-Murshid Inayat Khan:

If there is a kingdom of God to be found anywhere, it is within oneself. And it
is, therefore, in the knowledge of self that there lies the fulfillment of life.
The knowledge of self means the knowledge of one's body, the knowledge of one's
mind, the knowledge of one's spirit; the knowledge of the spirit's relation to
the body and the relation of the body to the spirit; the knowledge of one's
wants and needs, the knowledge of one's virtues and faults; knowing what we
desire and how to attain it, what to pursue and what to renounce. And when one
dives deep into this, one finds before one a world of knowledge which never
ends. And it is that knowledge which gives one insight into human nature and
brings one to the knowledge of the whole of creation. And in the end one attains
to the knowledge of the divine Being.

Religion is the school that has developed man, and the ideals that religion
presents form a path that leads upward to perfection, that innate and yearning
desire of every soul. ... The wise of all ages have taught that it is the
knowledge of the Divine Being that is life, and the only reality. Although a
human activity may have a number of complicated motives, some of which are base
and gross, it is the aspiration towards divinity, the desire towards beauty,
which is its soul, its life, and its reality. And it is in proportion to the
degree of strength or weakness of his aspiration towards beauty that man's ideal
is great or small, and his religion is great or small.