Shri Nathji beautifully concluded in the book that, in the final analysis, it did not matter whether a person believed in the concept of Oneness, Advaita, in which he saw God all around him and nothing else, or whether he believed in the concept of Duality or Dwaita in which he saw God and the world as two separate existences.
On the one side was man and on the other side was God. There was the world between them. Man had to go through the world in order to reach God. In Adwaita he had to find God in the world itself and he called this God Realisation. And in Dwaita he had to pass through the world of materialism seeking to reach a God outside of this world through prayers and austerities.
Shri Nathji had written in his book, Zahoore Haqueeqat:
Yaa to iss duniyaa ko chhorr kar Bhagwan se rishtaa jorr lo
Aur yaa iss duniyaa ke har paihloo men Bhagwan ko dekh kar uss se muhabbat karnaa seekh lo!
Either renounce this world and go towards God,
Or else see God in every face of the world and learn to love it!