cipher - Cryptograms in invisible ink

Solve the followng encrypted message.

--2b1-21-1b112----b1b---21-b--12--1----b1b---b2-12-1--b22---2b21--211---b--121b-121-b21bb--b2-----211-1-b2b1---1b-12----2b21--211---2112b112-12-111-b2-----21b-12----2b21--211---2112b112-12-111-b2

Be brave and frail, and you'll surely be able to see the answer!

Answer

The message reads:

Fire and ice, and death was coming. But he was steel. He was steel.

(the final line of Chapter 13, Floating like Snow, in The Path of Daggers, book 8 of Wheel of Time; the "he" referred to is Rand al'Thor).

It is encrypted like so:

The message is written in braille. I wouldn't have sen that without dmg's comment, but once he had pointed it out and I had seen the other heavy hints, it seemed to be obvious.

Braille letters are written in a grid of 2×3 dots. The message has 195 letters, which is divisible by three. The four characters encode one pair of horizontal dots: The dash means no dot, the 1 means the first or left dot; the 2 means the second or right dot and the b means both dots.

So the first letter made up of --2 is ⠠, which means the next letter is capital. The next letter b1- is ⠋ or F. The message also makes use of abbreviations like ⠯ for "and". Wikipedia has a detailed description on how Braille is used for English.