A person can feel pleasure without any effort, if the appropriate centers in his brain are electrically stimulated, or as a result of the chemical stimulation of drugs. But it is impossible to enjoy a tennis game, a book, or a conversation unless attention is fully concentrated on the activity. It is for this reason that pleasure is so evanescent, and that the self does not grow as a consequence of pleasurable experiences. Complexity requires investing psychic energy in goals that are new, that are relatively challenging. It is easy to see this process in children: During the first few years
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