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There is a curious thing that happens with the passage of time: a calcification of character... Change isn't always for the worst; the shell that forms around a piece of sand looks to some people like an irritation, and to others, like a pearl.

Jodi Picoult (2009). “My Sister's Keeper - Movie Tie-In: A Novel”, p.350, Simon and Schuster
There is a curious thing that happens with the passage of time: a calcification of character... Change isn't always for the worst; the shell that forms around a piece of sand looks to some people like an irritation, and