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。
Love is not enough. It has to be tended, like a fire.
We don't stop playing because we grow old; we grow old because we stop playing.
Loneliness is a lifelong companion, an established fact. Instead of denying it, fighting it, and avoiding it needlessly, you’d better accept it, let it protect you from going home in the crowd, and let it accompany you to breakfast on Saturday morning and tidy up the sunshine.