Abstract
During the recent discussions concerning the problem of the criterion of truth, some comrades have said: In real life we use a great many criteria to distinguish between true and false, such as the criterion for distinguishing between the fragrant flowers and the poison ivy [i.e., ideologically correct and incorrect], the criterion for distinguishing what is revolutionary from what is counterrevolutionary, the criterion for determining successors to manage the proletarian revolution, etc. Although these criteria are derived from practice, in themselves they are not practice but things of the subjective realm. Do they function in reality as criteria to test truth?