Authors:

Ka is a wheel; its one purpose is to turn. The spin of ka always brings us back to the same place, to face and reface our mistakes and defeats until we can learn from them. When we learn from the past, the wheel continues to move forward, towards growth and evolution. When we don’t, the wheel spins backward, and we are given another chance. If once more we squander the opportunity, the wheel continues its rotation towards devolution, or destruction.

Robin Furth, Stephen King (2006). “Stephen King's The Dark Tower: The Complete Concordance”, p.4, Simon and Schuster
Ka is a wheel; its one purpose is to turn. The spin of ka always brings us back to the same place, to face and reface our mistakes and defeats until we can learn from them. When we learn from the past, the wheel