Every mental state exists for a purpose; to understand it, we must ask what function it serves in the broader system of behavior.
每种心理状态都有其存在的目的；要理解它，我们必须询问它在更广泛的行为系统中发挥什么功能。
The truth can be a double-edged sword, cutting both ways.
The most powerful art often comes from the margins.
In every story, there is a hidden truth waiting to be discovered.
你必须相信你的长期计划，但你需要短期目标来激励和启发你。