This sentence originated from the famous saying of the young Marx in the "Rheinische Zeitung" in 1842. Now it is often quoted directly as a proposition of historical materialism. First of all, we should clarify these two basic views: 1. Philosophy is the summary and sublimation of the spirit of the times. 2. Philosophy is the forerunner of social change. Philosophy is the essence of the spirit of the times. Any philosophy that reflects the history and objective requirements of its own era can be Become the leader of social change in this era and guide social change. Arm yourself with Marxist philosophical ideas and promote social progress.

According to Marx, philosophy should represent its own era and the people of its own era, so that the most refined, precious and invisible essence of the people is concentrated in philosophical thought. "Philosophy asks: What is real? Rather than asking: What is valid? What it cares about is the truth for all people, not the truth for individual people..." In other words, philosophical questions are the product of the times, and philosophy The problem has obvious characteristics of the times. Philosophy cannot be separated from its own era. Philosophy is a reflection of the spirit of the times. What every real philosophical question grasps is a beat of the pulse of its own era; what every real philosophical question plays is the pulse of its own era. The strongest note of a section.