"My boyfriend's idea of a lesson was to take me on a black diamond run in the middle of a hail storm and say, 'Go!' Ski patrol had to escort me to another lift to get me down the mountain. No, that wasn't humiliating, not at all"

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There is, as every schoolboy knows in this scientific age, a very close chemical relation between coal and diamonds. It is the reason, I believe, why some people allude to coal as "black diamonds." Both these commodities represent wealth; but coal is a much less portable form of property.

— Joseph Conrad