The root of all superstition is that men observe when things hit, and not when they miss, and commit to memory the one, and pass over the other.
  一切迷信的根源在于人们只关注事情成功的时候,而不关注失败,他们只记住成功,而忽视失败。
创新不是凭空想象,而是基于对用户需求的深刻理解。