Memory is a kind of accomplishment, a sort of renewal even.
记忆是一种成就，甚至是一种更新。
The task must be made difficult, for only the difficult inspires the noble-hearted.
"The truth is not always beautiful, but it is always necessary."
Machinery and labor-saving devices are only valuable as they serve to reduce the cost of manufacture.
经验是我们给错误起的名字。