《论衡·卷二十六·实知篇》
当今以占射事物为职业的人，首先依据术数来判断吉凶，术数判断不中，就掺杂以人事。
方今占射事之工，据正术数，术数不中，集以人事。
Today, people who make a profession of divination first judge good or bad fortune based on the art of numbers, when the art of numbers fails to produce the correct result, they resort to human affairs.