「防人之心不可無」

(pos:語句)
<explanation>
yue:需要時常防備其他人謀害自己；有時會同上一句「#害人之心不可有」一齊用
eng:guard against those trying to harm you; sometimes used after #害人之心不可有 hoi6 jan4 zi1 sam1 bat1 ho2 jau5
<eg>
yue:防人之心不可無，出面個社會好複雜㗎。 (fong4 jan4 zi1 sam1 bat1 ho2 mou4, ceot1 min6 go3 se5 wui2 hou2 fuk1 zaap6 gaa3.)
eng:You'd better be aware of others. The world outside is complicated.