a postern door makes a thief
01
used to caution against creating opportunities for wrongdoing or crime, as even an honest person may be tempted to engage in wrongdoing if an opportunity presents itself
谚语
例子
I always advise my clients to be cautious about sharing sensitive information online. It's all too easy for hackers to exploit vulnerabilities and gain access to your data. As the saying goes, a postern door makes a thief.
