求讲这句话的语法But it is not only the difficulty and labor which me

你肯定知道not only ...but also...的结构,可以引申一下,这是not only ...nor ...“既不是...也不是...”的结构.
这句话是一个强调句：强调结构：It is/was ...that...(本句中是最后一个that).
原句为Not only the difficulty and labour which men take in finding out of truth nor it imposes upon men's thoughts when it is found(这些是主语,也是被强调部分）brings lies in favour (谓语和宾语）.
这句话除了用了一个强调句型外,还用了does bring强调动词的方式来强调.
缺乏上下句.试着翻译一下：
不仅仅是人类在寻求真理时遇到的困难和所费的力气也不是在找到真理后对人们思想的欺骗才带来谎言.（可能是说还有其他因素让谎言滋生）

总觉得这句话就很奇怪。。。
主句： it is not ... nor that ...
前半句： it is not only the difficulty and labor which men take in finding out of truth， "which men take in finding out of truth" 是修饰 difficulty and la...