Exceed your customers' expectations. If you do, they'll come back over and over. Give them what they want — and a little more.
数学是给不同事物赋予相同名称的艺术。
人类思维存在着滞后性。我们常常根据过去的经验来应对未来,却忽视了未来可能与过去完全不同。
只要生者还在记忆,逝者就从未真正离去。