The topic of "paradox" has lasted for over two thousands years since the "liarparadox" in the ancient Greek.
“悖论”这个话题自古希腊的“说谎者悖论”至今，已有两千多年的历史了。
2
And pointed out "this sentence" refers is the null set, is insignificant, from the analysis of the liar sentence itself, thus proposes own the approach to paradox solution.
并从说谎者语句本身的分析指出“本语句”的指称为空集，从而提出自己的解决语义悖论的方案。
3
The liarparadox is the most difficult paradox to analyze.