你能做的最好的投资就是投资自己。
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.
没有什么会永远失去。在这个世界上，有一种痛苦的进步。既怀念我们留下的，又梦想着未来。
形式化方法的美在于它们能够提供关于系统正确性的绝对确定性。
The future of agriculture lies in balancing tradition with innovation.
A physical symbol system has the necessary and sufficient means for general intelligent action.