Can confirm, found ~2 beeswax candles (dunno if other materials are different brightness) is perfect for reading and getting about the house. I've been looking for a < 5 candle power battery incandescent-bulb lamp, but haven't found one. May have to build it. Candles are expensive (unless you get the stinky petroleum ones), inconvenient[0], and a bit of a fire hazard.

Once you get used to a couple candles carried (per person) and maybe one in the room for general illumination—which only took me a couple days—electrical multi-room illumination at night seems irritatingly bright and kinda insane. Sort of like when you cut out soda and then try one after a while and are put off by how cloyingly sweet it is.

[0] I wouldn't do it again without a shaded candle holder, for instance, otherwise you end up looking at them by accident all the time which is painful when your eyes are adjusted for low light. Would probably need to bump up to three candles to account for the shade.