The difference between dialectical logic and formal logic is that dialectical logic always emphasizes the premise, conditions and relativity of propositions. Formal logic often pursues a universal, unconditional, and absolutely correct proposition.

Dialectical logic is different from the "either/or" logical rules of formal logic. It is always "either this or that." ?

For example: Zhang San is either a good person or a bad person (formal logic), ?Although Zhang San is greedy for money and lust, he is very loyal (dividing various qualities into two-dialectical logic); ? Zhang San is quite bad, but sometimes he is also quite good (divided into two in terms of time, dialectical logic). Dialectical logic rejects those one-sided propositions that are divorced from specific conditions and claim to be universally and absolutely true!

It can be seen that the premise for deducing "Zhang San is bad" is to talk about his greed for money and lust; the premise for deriving "Zhang San is good" is to talk about his quality of loyalty; similarly, The quality of Zhang San also depends on the condition and premise of time. ?That is, dialectical logic gives certain preconditions when giving propositions.

This is also in line with a principle of dialectics: everything changes based on conditions, and contradictions transform into opposites under certain conditions.

Dialectical logic believes that truth is concrete. Only when certain and specific premises, conditions, standards, and references are given, can the political affairs of propositions be judged. What we often call dialectical logic is the use of dialectical logic. Its power is not only that it can easily refute any point of view, but also that it can easily find theoretical basis for any point of view.

Other differences:

Formal logic does not believe that a judgment standard is needed, but that there is a natural, self-evident and self-evident universal standard. Logically, the four laws of formal logic are used as the standard for the rationality of thinking. In physics, such as the attempt to use "ether" as an absolute reference system. ?

In ethics, "gentleman" is used as the standard for measuring moral character. In daily life, "common sense" is used as the standard for the rationality of discourse.