在数学中，提出问题的艺术必须比解决问题更有价值。
In mathematics, the art of proposing a question must be held of higher value than solving it.
The mind is a dynamic system that constantly adapts to its environment.
模型的唯一真正检验是其预测未来的能力，而未来总是不确定的。
Memory is a fragile thing, easily distorted by time and politics.