秀才不出门，而知天下事秀才不出门，全知天下事xiù cái bù chū mén , ér zhī tiān xià shì

a scholar,without leaving home,knows all that goes on in theworld
❍ 古之秀才，自以为无所不晓，于是有“～”这自负的漫天大谎，…… (鲁迅《南腔北调集·谚语》108) Theold literati,who thought themselves omniscient,boasted to everyone; “A scholar,without leavinghome,knows all that goes on in the world.”/ “秀才不出门，全知天下事”，在技术不发达的古代只是一句空话，……(《毛泽东选集》264) The saying，“without steppingoutside his gate the scholar knows all the wide world’saffairs”，was mere empty talk in past times whentechnology was undeveloped.

秀才不出门，而知天下事xiùcáibùchūmén,érzhītiānxiàshì

见“秀才不出门，能知天下事”。鲁迅《南腔北调集·谚语》：“古之秀才，自以为无所不晓，于是有‘～’这自负的漫天大谎，小百姓信以为真，也就渐渐的成了谚语，流行开来。”