贵耳贱目[ guì ěr jiàn mù ]

⒈ 重视耳听来的，轻视亲眼看见的。指轻易听信传闻而不重视事实。例世人多蔽，贵耳贱目。——北齐·颜之推《颜氏家训慕贤》英to trust one's ears rather than one's eyes——rely on hearsay;