Not necessarily your mother, or indeed mine, but, as it were, the ideal mother, somebody who doesn't care about your achievements. Unfortunately, most people are not our mothers. Most people make a strict correlation between how much time, and if you like, love -- not romantic love, though that may be something -- but love in general, respect --they are willing to accord us, that will be strictly defined by our position in the social hierarchy.

Profit and sustainability are not enemies; they are partners in long-term success.

如果在一个游戏中，获胜变得过于重要，那么我们可以修改游戏规则以便从中获得更多乐趣。而修改规则本身就可以成为一个新的游戏。

Life can only be understood backwards; but it must be lived forwards.