By used books. They have the same words as the new ones. Also libraries.
创新不仅仅是技术问题;它关乎改变思维方式和接受新的思考模式。
Architecture is not about form, but about space and light.
你自己的心灵是一个神圣的围墙,除非得到你的许可,否则没有任何有害的东西能够进入。