"Life is a balance. We tend to forget that as we go blithely from day to day. We eat and drink and sleep and assume we will always rise up the next day, that meals and rest will always replenish us. Injuries we expect to heal, and pain to lessen as time goes by. Even when we are faced with wounds that heal more slowly, with pain that lessens by day only to return in full force at nightfall, even when sleep does not leave us rested, we still expect that somehow tomorrow will all come back into balance and that we will go on. At some point, the exquisite balance has tipped, and despite all our flailing efforts, we begin the slow fall from the body that maintains itself to the body that struggles, nails clawing, to cling to what it used to be."