Practice is the sole criterion for testing truth
Practice is the only criterion for testing truth, which is unconditional and absolute. Practice can test all knowledge, and there is no knowledge that it cannot test.
Dialectical Unity of Absolute and Relative
The perfect combination of absoluteness and relativity of practice standard is the charm of dialectics on the question of truth standard. Truth is not immutable, but constantly develops in the dialectics of practice and cognition.
Relativity under historical conditions
Any practice is concrete and limited by historical conditions, so practice under historical conditions cannot completely refute or confirm all existing understandings. At the same time, the test of knowledge by practice is a continuous process, not once and for all. This means that the practice in a certain historical stage is conditional and relative to the test of truth.