Solving the oxymoron of nibbāna?

How does one remain dedicated to the pursuit of nibbāna, when one has seen clearly that ultimately there is no separate nibbāna. What does one aspire towards now? Prajñāpāramitā Hṛdaya sūtra: «There is no suffering, no cause of suffering, no end to suffering, no path to follow» >Where beauty is, then there is ugliness; where right is, also there is wrong. Knowledge and ignorance are interdependent; delusion and enlightenment condition each other. Since olden times it has been so. How could it be otherwise now? Wanting to get rid of one and grab the other is merely realizing a scene of stupidity. Even if you speak of the wonder of it all, how do you deal with each thing changing? > > ................................................................................................~Ryokan