最危险的艺术是让人思考的那种。
译文：再好的医生救不了注定要死的人，再凶的人也斗不过老天爷。
The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.
对逻辑形式的研究不仅关乎语言，也关乎世界。
Every word is a step towards understanding.
