“我们都是时间旅行者，在脑海中穿越过去、现在和未来。”

安全不是成本——它是对我们最宝贵资源（人）的投资。

I don't think about the past, I just think about the future.

Mental phenomena can only be understood in terms of their consequences for action.

每一种真理都需要经过三个阶段：首先被嘲笑，然后被激烈反对，最后被视为自明之理。