User needs are both the starting point and the end point of business.
Stray birds of summer come to my window to sing and fly away. And yellow leaves of autumn, which have no songs,flutter and fall there with a sigh.
科学的整个历史是一个渐进的自我实现的历程,重大的事件不会任意发生,但是他们反映了一种潜在的次序,而不会简单地由灵感产生。
不要再担心可能会出错的事情,开始对可能会顺利的事情感到兴奋。
The heart of another is a dark forest, always, no matter how close it has been to one's own.