成功不是终点，失败也不是末日。
逻辑学研究不仅仅是关于推理规则，而是关于推理本身的本质。
没有行动的愿景只是梦想。
Sometimes we stare so long at a door that is closing that we see too late the one that is open.
In Russia, the severity of laws is compensated for by the fact that it is not necessary to execute them.
