La vie est une comédie pour ceux qui pensent, une tragédie pour ceux qui sentent.
生活对那些思考的人来说是喜剧，对那些感受的人来说是悲剧。
I always thought it was important to have a vision and to persist.
Don't fear failure; fear the absence of trying.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
太阳不会永远闪耀。
The world is a fine place and worth fighting for.