艺术家必须像上帝在创造中一样存在于他的作品中，无形而全能；人们必须处处感受到他，但永远看不到他。
The artist must be in his work as God is in creation, invisible and all-powerful; one must sense him everywhere but never see him.
Dream big and work hard.
The peculiar evil of silencing the expression of an opinion is that it is robbing the human race； posterity as well as the existing generation； those who dissent from the opinion， still more than those who hold it.
数学的美只向更有耐心的追随者展示。