“activity,” in the modern usage of the word, is usually meant an action which brings about a change in an existing situation by means of an expenditure of energy. Thus a man is considered active if he does business, studies medicine, works on an endless belt, builds a table, or is engaged in sports. Common to all these activities is that they are directed toward an outside goal to be achieved. What is not taken into account is the motivation of activity. Take for instance a man driven to incessant work by a sense of deep insecurity and loneliness; or another one driven by ambition, or greed
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