The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
抽象的目的不是模糊，而是创建一个新的语义层次，在这个层次上可以绝对精确。
A esperança é a última que morre, mas é a primeira a renascer.
水产养殖是农业的下一个前沿领域。
成功是一种强力的除臭剂。
"To be useful was the best thing the old men ever hoped for themselves, and to be aimless was their worst fear."
There is something profoundly mysterious about quantum mechanics that we still don't understand.