出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第254页（245字）
向自己发问，指自我反省，例为人做事只要扪心自问能仰不愧于天，俯不怍于地，又何须在意别人的闲言闲语或恶意中伤。
When doing a job for another person，one need not fear any criticism or accusation from other people as long as one's own conscience is clear