思想需要书来磨砺，正如宝剑需要磨刀石。
A mind needs books like as word needs a whetstone.
最好的建筑是看不见的；重要的是其中的生活。
The human mind is designed to seek out and find evidence that confirms what it already believes.
The pursuit of knowledge is a journey without end, and that's what makes it exciting.
The severe morals of the early Romans produced a race of men who were neither superstitiously devout nor philosophically skeptical.