The seeds must be carefully chosen; they must fall on good ground; they must be sedulously tended, if the vivifying fruits are to be at hand when needed.

要想在需要的时候可随手摘取充满生机的果实，那就必然从精选良种做起，然后将其植入肥沃的土地，还需要勤勉地护理。

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Apple tells its customers they must not download an app if they fall below the stated age limit - but users can click away the warning message.

BBC: Twitter's Vine app gets adult rating on Apple store

The simple truth--one that bubble theorists consistently ignore--is that there's no law that says markets must collapse if they rise too much, just as there's no law that says markets must rebound if they fall too much.

FORBES: Magazine Article

So when tax revenues plummet, as they did during and after the recession, spending must fall in concert.

ECONOMIST: The public sector is still hobbling the economy