If this idea is correct, then we are all stuck on what has been called the “hedonic treadmill.”13 On an exercise treadmill you can increase the speed all you want, but you stay in the same place. In life, you can work as hard as you want, and accumulate all the riches, fruit trees, and concubines you want, but you can’t get ahead. Because you can’t change your “natural and usual state of tranquility,” the riches you accumulate will just raise your expectations and leave you no better off than you were before. Yet, not realizing the futility of our efforts, we continue to strive, all the while
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