“ Order and simplification are the first steps toward the mastery of a subject. 秩序和简化是掌握一门学科的第一步。 Thomas Mann 托马斯·曼
“ The object of teaching a child is to enable him to get along without his teacher. 教育孩子的目的是使他在没有老师的情况下也能过得好。 Elbert Hubbard 埃尔伯特·哈伯德