A good abstraction is one that emphasizes the important details and suppresses the unimportant ones.
一个好的抽象是强调重要细节并抑制不重要细节的抽象。
In mathematics, you don't understand things. You just get used to them.
科学与农业的结合将为农民创造更美好的未来。
"Without the past, there is no future."