道所存者，乃师所存者 (道所存者，乃師所存者) dào suǒ cún zhě, nǎi shī suǒ cún zhě

dào suǒ cún zhě, nǎi shī suǒ cún zhě phrase if somebody has grasped the truth before you, take him as your teacher
Domain: Literary Chinese 文言文
Notes: Tang dynasty essayist Han Yu 韩愈 (CC-CEDICT '道所存者，乃師所存者')