I've been hoarding torches, because...well, I wouldn't like to be stuck in the Grimrock dungeons without any light! When one is about to go out I can often just swap it out for a new one and have a nice steady light again.
However, if there's a way to re-light torches (maybe by interacting with torches already on the wall?) then I can dump a few and just keep enough to appease my inner scaredy-cat. Is this possible? Or are torches 'depleted' once they go out?
I should point out that I've only just started playing (still on level 1) so if there's a relevant but non-obvious game mechanic I'm missing here, please let me know.