Nothing is Forever means Self is Forever.

As to the philosophy of life aka the meaning and purpose of life; it is only partially correct to note that 'this too will pass' and that 'nothing is forever'. Why? Self is Forever. All that is here is Self. Self is immaterial but perceives itself as physical. Self is pure spirit. Physic(al) being Spirit(ual). In other words: Spirit Self Is. Self is Spirit. There is no such thing as death really. Both life and death belong to one thing - this thing is no thing but Self. Self Itself Is. Self Always Is. There is thus nothing to be afraid about nor is there any need to despair. It is always good to remind oneself that all is always G-d for so it is; all is always G-d.

~ Wald