The secret source of Longfellow's humor is not joy but sorrow. There is no humor in heaven.
朗费罗幽默的秘密源泉并不是欢乐而是悲伤。天堂里没有幽默。
大脑的活动构成了心智
法律的概念涉及义务的初级规则与承认、变更和裁决的次级规则的结合。
The good things are not dead.