The Lion of Comarre and Against the Fall of Night (English, Paperback, Arthur C. Clarke)

This volume is a collection of two early works by Arthur C. Clarke. Originally published in 1968, it has been reprinted several times. Both concern Earth in the far future, with a utopian, but static human society.

Against the Fall of Night was later expanded and revised into a novel as The City and the Stars, one of Clarke’s best-known works.

The Lion of Comarre has a similar theme. It is about a dissatisfied young man in search “something more” in a future society that believes it has discovered everything and ceases to advance. The two are not, however, in the same future history.
Source- Goodreads.com