“ Cheerfulness keeps up a kind of daylight in the mind, and fills it with a steady and perpetual serenity. 快乐使我们的心灵保持着一种光明,使它充满一种稳定和永恒的宁静。 Joseph Addison 约瑟夫·艾迪生
“ Only when he has attained a final knowledge of all things will man have come to know himself. For things are only the boundaries of man. 只有当人对一切事物有了最后的认识,他才会认识自己。因为事物只是人的边界。 Friedrich Nietzsche 弗里德里希·尼采