To know this truth in the most inward sense of the word know,by living it,by being it -is the final end of all spiritual effort. Nirvana is the extinction of the not- self in the completion of the Self,the goal of perfection and not the abyss of anihilation. Thru the destruction of all that is individual in us,we can enter into communion with the whole universe And become an integral part of the great purpose.
Perfection is then the sense of oneness with all that is,has ever been and can ever be.