In computer science, abstraction is the key to managing complexity.

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.

过去是一个陌生的国度；那里的人们行事方式不同。

The greatest hazard of all, losing one’s self, can occur very quietly in the world, as if it were nothing at all.