【入主出奴】〖rù zh ch nú〗[enter as a host and out as a slave -- a subjective person who expresses different opinions; sectarian views; take a sectarian attitude]

入港谈投机，

主观臆断忌。

出乖露丑窘，

奴颜媚骨耻。

崇信了一种学说，必然排斥另一种学说；把前者奉为主人，把后者当作奴仆。比喻学术思想上的宗派主义。believe in one theory, will repel another; Regard former as master, latter as slave. Metaphor is sectarianism in academic thought.