英语翻译欲望满足之前是痛苦,欲望满足之后是空虚!精神是生命之自割：生命因痛苦而增长知识.这两句怎么翻 最好是原版

The desire to meet before the process is painful,followed by the desire to meet the emptiness!
The spirit of life,self-cutting:Life is painful and growth of knowledge.