1001, not 1000.
1001 implies that there is more yet to come, possibilities beyond possibilities, life unending.
A thousand nights – and another night, again.
It doesn’t end when it ends. It continues…
Perhaps round numbers are too even, too steady, too boring. The addition of a single night after the 1,000 already passed denotes more… and more… and more… breathlessly, wordlessly unfolding and expanding forever and in a single number encompassing all of the universe ~