The power of abstraction is that it allows us to ignore irrelevant details and focus on the essential aspects of a problem.
抽象的力量在于它允许我们忽略不相关的细节，专注于问题的本质方面。
历史的地理枢纽是世界上那些海权无法触及但却是陆权天然堡垒的区域。
The essence of causal inference is to go beyond the data and ask what would happen if we intervene.
Resilience is not a trait that people either have or do not have. It involves behaviors, thoughts and actions that can be learned and developed in anyone.
The world is not a wish-granting factory.
"The greatest wealth is to live content with little."