文章认为：实践是介于主体和客体之间的桥梁、纽带、连接点、交错点和沟通道。它的表现形式如同高速公路，是“双线道”的。第一线道是由主体到客体，第二线道是由客体到主体。提出实践具有顺序运动、依次发展的四种具体形态。论证了知识分子的精神活动也是实践。指出过去曾经流行的所谓“知识分子脱离实践”的概念，实际上是根本不存在的。强调推翻这个乌有概念，肯定知识分子在实践过程中的应有地位和重要作用，是科教兴国和社会主义建设大业的需要。 The article holds that practice is a bridge, link, connection point, intersection point and channel of communication between subject and object. It behaves like a highway, is a “two-lane”. The first line from the main body to the object, the second line from the object to the main body. Put forward the practice of a sequence of movements, followed by the development of the four specific patterns. It is also proved that the spiritual activities of intellectuals are also practices. He pointed out that the so-called concept of “intellectuals getting out of practice” once prevailed in the past actually does not exist at all. Emphasizing that overthrowing this vague concept and affirming the due status and important role of intellectuals in the process of practice is the need of rejuvenating both the country and the country through science and education and the great cause of building socialism.