The final result depends on the level of children's upbringing costs, the utility that parents get from the investment in the human capital of children and the return rate of education investment.

少儿抚养人口比例对居民储蓄的净影响取决于少儿的抚养费用水平、父母从对儿童进行人力资本投资行为中得到的效用和教育的投资收益率。

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And those widening gaps, those widening salary differentials, continue to widen because again once you internalise the notion of the higher education project being about private return for private investment then obviously individual members of the faculty begin thinking to themselves and understanding their mission in private rather than public ways.

BBC: NEWS | UK | Education | Higher education 'market' warning

We hear more and more the term "human capital", a perfectly appropriate economic term, I use it quite often, others of you in this room have used it but it is used in the context of, again, education - higher education - being a private investment and with the expected higher private return for those individuals capable of making that investment.

BBC: NEWS | UK | Education | Higher education 'market' warning

But with more than 5% of GDP being spent on education, South Africa is getting a rotten return on its investment.

ECONOMIST: South Africa's education system