Within

For the secret of all knowledge that one acquires in the world, whether worldly knowledge or spiritual knowledge, is the knowledge of the self.
For instance, music is played outside, but where is it realized?
It is realized within.
A good word or a bad word is spoken outside, but where is it realized?
It is realized within.
Then where is the realization of this whole manifestation, all this creation that stands before us in all its aspects?
Its realization is within.
And at the same time the error of man always continues.
Instead of finding it within he always wants to find it without.
It is just like a man who wants to see the moon and looks for it on the ground.
And if a man sought for thousands of years for the moon by looking on the earth, he will never see it.
He will have to lift up his head and look at the sky.
And so with the man who is in search of the mystery of life outside; he will never find it.
For the mystery of life is to be found within.
-- by Pir-o-Murshid Inayat Khan:

God is within you; you are His instrument, and through you He expresses Himself to the external world.