Lenin: Cleverness lies in learning, and genius lies in accumulation. Gorky: Books are the ladder of human progress. Newton: You can't make great discoveries without bold guesses. Einstein: For me, the meaning of life lies in putting yourself in others' shoes, worrying about others' worries and enjoying others' happiness. Edison: A good book is what the author left to mankind. Sudra Kahn: Reading a good book will make you stronger and smarter. Voltaire: Reading makes one's mind clear. Bacon: Books, like ships, travel through the boundless ocean of time. Mao Zedong: Nothing is difficult, as long as you are willing to climb. Zhou Enlai: Studying for the Rise of China. Li Dazhao: Iron shoulders bear morality, and clever hands write articles. Ba Jin: I have always maintained the belief that the meaning of life lies in giving, giving, not accepting, nor fighting for it. Master hongyi: don't deceive yourself inside, and don't deceive others outside. Bruce Lee: It's harder to beat yourself than to beat others. Lei Feng: Human life is limited, but serving the people is infinite. I want to devote my limited life to serving the people infinitely.