But happiness can never be achieved. If we succeed in overcoming the force of circumstances, nature at once shifts the battle-ground, placing it within ourselves, and effects a gradual change in our hearts until they desire something other than what they are about to possess. And if the change of fortune has been so rapid that our hearts have not had time to change, nature does not on that account despair of conquering us, in a manner more gradual, it is true, more subtle, but no less efficacious. It is then at the last moment that the possession of our happiness is wrested from us, or rather
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