抑郁症和精神分裂症（包括程度较轻的形式 ） “ 病毒”根源在于文化：从社会成员的自我定义和个人身份角度讲，这些社会存在选择困难，以至于许多人迷失了方向，只能随波逐流。
The “virus” of depression and schizophrenia, including their milder forms, is cultural in origin: the embarrassment of choices that these societies offer in terms of self-definition and personal identity leaves many of their members disoriented and adrift.