One can't proceed from the informal to the formal by formal means.

Learning is a process of creating and strengthening neural pathways.

"Books are the mirrors that reflect our potential."

The world is my country, all mankind are my brethren, and to do good is my religion.

"History is not what happened, but what we remember and how we remember it."

国家是理性的行为者，在无政府状态的国际体系中寻求最大化其权力和安全。