False facts are highly injurious to the progress of science, for they often endure long.  
出自北齐·颜之推《颜氏家训·勉学》。不管是愚人还是聪明人,总想自己见多识广,但不肯读书,这就等于想吃饱饭却懒得做饭,想穿暖却懒得缝制衣服。