在解释行为时,意志的概念是不必要的。
每一种化合物都必须有确定的组成,这可以用其元素的符号来表示。
革命道德不是从天上掉下来的。它是在日常斗争中培养,在革命活动中锤炼的。
The truth is not something to be discovered, but something to be created.
Every piece of plastic ever made still exists somewhere - that's not just a fact, it's our responsibility.
We are on the verge: Today our program proved Fermat's next-to-last theorem.