What we call hindrances are really the raw material of spiritual life. As if the fire should call the coal a hindrance! One can imagine a little young fire, which had been getting on nicely with the sticks and paper, regarding it as a mere cruelty when the big lumps were put on: never dreaming what a huge steady glow, haw far surpassing its present crackling infancy, the Tender of the Fire designed when he stoked it.
C.S. Lewis, Yours, Jack, p. 20