Recently I watched the first Lord the of the Rings movie, Fellowship of the Ring. Gandalf takes a envelope and throws in the fire, and picks it up and gives it to Frodo and asks him if he can see any writing on the ring.
Initially the script does not show on the ring and eventually the Elvish (As Frodo says) script becomes visible. When Frodo says he can actually see it, Gandalf appears to be upset/disappointed that he can. What does this mean? It seems like the One Ring chooses its bearer. I'm strictly speaking from the Movie and his reaction, does Tolkien ever go into more depth about this?