离经叛道
[词典] discard the classics and rebel against orthodoxy; be guilty of heterodoxy; be heretical and deviate from the true teachings; depart from the classics and rebel against orthodoxy;
[例句]她鼓励人们坚持工作而不是离经叛道地去过公社生活。
She encourages people to keep their jobs rather than dropping out to live in a commune.