眼见为实，耳听为虚 [ yǎn jiàn wéi shí，ěr tīng wéi xū ]
基本释义
谓亲眼看见的比听说的要真实可靠。周立波《山乡巨变》上五：“眼见为实，耳听为虚，听人说的靠不住。”刘真《春大姐》：“玉春娘 嘴里虽没有说出，心里可老是相信着那句老话：眼见为实，耳听为虚。”
英文翻译
to believe what one sees, not what one hears (idiom). Don't believe what people tell you until you see if for yourself.; It ain't necessarily so.