"Books are the plane, and the train, and the road. They are the destination, and the journey. They are home."
每一个挑战都是学习和改进的机会。
大国政治的悲剧在于,即使是善意的国家也被迫采取可能导致冲突和战争的行为。
When we quarry with future generations in mind, stone becomes a bridge, not just a resource.
The art of doing mathematics consists in finding that special case which contains all the germs of generality.