任何东西的初稿都是狗屎。
不要等待完美的时刻。抓住这一刻，让它变得完美。
The world is a book, and those who do not read live only one life.
我不抱怨。我继续努力工作，在每一刻都尽力而为。
"The past is a foreign country; they do things differently there."
The PAC learning framework provides a formal way to quantify the learnability of a concept class.