J.K. Rowling(哈里波特的作者）在哈佛毕业典礼上的演讲有这么一段话：

...Some failure in life is inevitable. It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all – in which case, you fail by default.

生活中有些失败是避免不了的。活着不可能永远不失败，除非你小心翼翼到那根本不能算作“活”的地步，如果这样，你从一开始就输了。