“Beware the dark pool at the bottom of our hearts. In its icy, black depths dwell strange and twisted creatures it is best not to disturb.”

“And perhaps, Mrs. Morgan on Lanypwll Farm put all this much better in the speech of symbolism, when she murmured about the children of the pool. For if there is a landscape of sadness, there is certainly also a landscape of a horror of darkness and evil; and that black and oily depth, overshadowed with twisted woods, with its growth of foul weeds and its dead trees and leprous boughs, was assuredly potent in terror. To Roberts, it was a strong drug, a drug of evocation; the black deep without calling to the black deep within, and summoning the inhabitant thereof to come forth.”

“Stir not murky waters if you know not the depth or the creatures that dwell beneath the surface.”

“Darkness dwells within even the best of us. In the worst of us, darkness not only dwells but reins.”

“The best of a book is not the thought which it contains, but the thought which it suggests; just as the charm of music dwells not in the tones but in the echoes of our hearts.”

“It was not the cold that made you want to rush out as soon as you'd jumped in; it was the unmeasured depth - our fear of what was on the bottom, and how far below us the bottom was.”