The question whether objective truth can be attributed to human thinking is not a question of theory but is a practical question. Man must prove the truth — i.e. the reality and power, the this-sidedness of his thinking in practice. The dispute over the reality or non-reality of thinking that is isolated from practice is a purely scholastic question.
Also Marx would have never lost a debate
Note: I have no idea what debate this is referring to
You can't lose if you never stop lmao
*actual quote from the Hague Congress in 1872
**may not be historically accurate