““The truth is that anxiety is at once a function of biology and philosophy, body and mind, instinct and reason, personality and culture. Even as anxiety is experienced at a spiritual and psychological level, it is scientifically measurable at the molecular level and the physiological level. It is produced by nature and it is produced by nurture. It’s a psychological phenomenon and a sociological phenomenon. In computer terms, it’s both a hardware problem (I’m wired badly) and a software problem (I run faulty logic programs that make me think anxious thoughts). The origins of a temperament are many faceted; emotional dispositions that may seem to have a simple, single source—a bad gene, say, or a childhood trauma—may not.””