The most stupid person is the one who sells his life for the sake of others.

BBC: NEWS | Middle East | 'Bin Laden' messages: Full text

You are selling your life for the sake of others.

BBC: NEWS | Middle East | 'Bin Laden' messages: Full text

Some may think mentoring is for the sake of others.

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Some mean that we need more revenue, and others believe that the system should be more progressive for the sake of fairness.

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For the sake of the experiment, the researchers promised immediate compensation to some participants and deferred compensation to others, regardless of the incentive scheme.

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