理论的先进性是党先进性的一面精神旗帜——以改革开放以来党对社会主义本质认识的深化为视角

理论的先进性是党先进性的一面精神旗帜。改革开放以来，中国共产党以邓小平、江泽民、胡锦涛为代表，对“什么是社会主义、怎样建设社会主义”的问题进行了持续、深入的探索，逐步深化了对社会主义本质的认识，形成并发展了中国共产党人的社会主义本质观。这是中国共产党与时俱进，通过理论的先进性来保持党的先进性、推进中国特色社会主义事业的一个集中表现。

The Advanced Nature of Theory:A Spiritual Flag of the Advanced Nature of CPC——A Angle of How the CPC Gains a Deeper Understanding on the Essence of Socialism Since Reform and Opening-up

The advanced nature of theory is a spiritual flag of the advanced nature of CPC.Since reform and opening-up,the CPC,with Deng Xiao-ping,Jiang Ze-min and Hu Jin-tao as the representatives,has been making sustained and intensive probe on the subject of "what is socialism and how to construct socialism".During the process,the CPC has generally gained a deeper understanding on the essence of socialism,and has formed and developed her idea of the essence of socialism.This is a concentrated manifestation of the CPC advancing with times,maintaining the party,s advanced nature and promoting the cause of building socialism with the Chinese characteristics by the advanced nature of theory.