The sign of return marks an infinite number of daydreams

A nest-house is never young. Indeed, speaking as a pedant, we might say that it is the natural habitat of the function of inhabiting. For not only do we come back to it, but we dream of coming back to it, the way a bird comes back to its nest, or a lamb to the fold. This sign of return marks an infinite number of daydreams, for the reason that human returning takes place in the great rhythm of human life, a rhythm that reaches back across the years and, through the dream, combats all absence. An intimate component of faithful loyalty reacts upon the related images of nest and house.

Gaston Bachelard, The Poetics of Space (Beacon Press, 1969) p. 99

The past becomes the future

As surely as the future becomes the past, the past becomes the future. To deny is not to achieve. The Odonians who left Urras had been wrong, wrong in their desperate courage, to deny their history, to forego the possibility of return. The explorer who will not come back or send back his ships to tell his tale is not an explorer, only an adventurer; and his sons are born in exile.

Ursula Le Guin, The Dispossed (Gollancz, 2002) p. 76

Home is a place where you have never been

You shall not go down twice to the same river, nor can you go home again. That he knew; indeed it was the basis of his view of the world. Yet from that acceptance of transience he evolved his vast theory, wherein what is most changeable is shown to be fullest of eternity, and your relationship to the river, and the river's relationship to you and to itself, turns out to be at once more complex and more reassuring than a mere lack of identity. You can go home again, the General Temporal Theory asserts, so long as you understand that home is a place where you have never been.

Ursula Le Guin, The Dispossed (Gollancz, 2002) p. 48

The simulacrum is the true character or form

When eternal return is the power of (formless) Being, the simulacrum is the true character or form – the "being" – of that which is. When the identity of things dissolves, being escapes to attain univocity, and begins to revolve around the different. That which is or returns has no prior constituted identity: things are reduced to the difference which fragments them, and to all the differences which are implicated in it and through which they pass.

Gilles Deleuze, Difference and Repetition (Continuum, 2004) p. 80

Returning is becoming

That identity not be first, that it exists as a principle but as a second principle, as a principle become; that it revolve around the Different: such would be the nature of a Copernican revolution which opens up the possibility of difference having its own concept, rather than being maintained under the domination of a concept in general already understood as identical. Nietzsche meant nothing more than this by eternal return. Eternal return cannot mean the return of the Identical because it presupposes a world (that of the will to power) in which all previous identities have been abolished and dissolved. Returning is being, but only the being of becoming.

Gilles Deleuze, Difference and Repetition (Continuum, 2004) p. 50