What is duty after all? It is really the impulsion of the flesh, of our attachment; and when an attachment has become established, we call it duty. For instance, in countries where there is no marriage, there is no duty between husband and wife; when marriage comes, husband and wife live together on account of attachment; and that kind of living together becomes settled after generations; and when it becomes so settled, it becomes a duty. It is, so to say, a sort of chronic disease. When it is acute, we call it disease; when it is chronic, we call it nature. It is a disease. So when attachment
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