一个好的旅行者不知道他要去哪里。
科学家研究自然并非因为它有用;他研究它是因为他从中获得乐趣,而他从中获得乐趣是因为它是美丽的。
The only limits you have are the ones you set for yourself.
User needs are both the starting point and the ultimate goal of product development.