"The only limit to our realization of tomorrow will be our doubts of today."
The world we see that seems so insane is the result of a belief system that is not working.
至今一切社会的历史都是阶级斗争的历史,即剥削阶级和被剥削阶级之间、统治阶级和被压迫阶级之间斗争的历史。