The joy of mathematics comes from the act of creation, not just the result.
I need a heart to write. Without passion, I am nothing.
Quality is never an accident; it is always the result of intelligent effort.
The artist must be a guardian of mystery.
历史中的优点似乎有三种,一种是来自气候和国家的纯粹地理位置,一种是来自政府形式和人民性格,一种是来自那些更细致的哲学原则和道德,可以称为哲学的推荐。