欧几里得·几何原本

在几何里，没有专为国王铺设的大道。 There is no royal road to geometry. 欧几里得

There is no royal road to geometry.

从那么少的几条外来的原理，就能够取得那么多的成果，这是几何学的光荣。 It is the glory of geometry that from so few principles, fetched from without, it is able to accomplish so much. 牛顿《自然哲学之数学原理》序