The barrier to his pursuit, which made him perplexed and oscillate, lay in the negative influence in academic pragmatism, the left leaning class struggle theories and traditional ideology.

• 而这种追求之所以受到阻碍 ,使顾颉刚深为彷徨、苦闷 ,就在于受到“经世致用”思想和“左”倾的阶级斗争理论以及传统意识形态等对学术研究的消极影响。