某些甚至困惑了逻辑学家长达数千年，18，谢谢！ 悖论集锦 (1) –- 逻辑学中也有悖论意味着什么？ 程京德 “逻辑学是一门研究论证与推理之正确性的基础性学问，(By “paradox” one usually means a statement claiming something which goes beyond (or even against)‘common opinion’ (what is usually believed or held). Paradoxes form a natural object of philosophical investigation ever since the origins of rational thought; they have been invented as part of complex arguments and as tools for refuting philosophical theses.)”