过去是远处的一支蜡烛：近得让你无法放弃，远得无法给你安慰。

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.

Everyone has a secret world inside of them. All of the people of the world, I mean. Everybody. No matter how dull and boring they are on the outside, inside them they've all got unimaginable, magnificent, wonderful, stupid, amazing worlds. Not just one world. Hundreds of them.

The best mathematics is that which you do not understand at first glance.

We are going to die, and that makes us the lucky ones. Most people are never going to die because they are never going to be born.

Love should never hurt.

Technology itself has no value; it only becomes meaningful when it solves real problems.