But more important than fashion or sex, it's the emotional security that primarily comforts me inside these special bonds, especially during life's worst moments.

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The use of this interruptive sound accomplishes two important ends for Microsoft: it focuses our attention and creates an emotional link to security for the Surface.

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While the injured and those closest to the blasts are most prone to psychological aftershocks, even people with no physical injuries and those like Greeley might feel the emotional impact for weeks afterward as they struggle to regain a sense of security.

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Due to her position as a woman, she suffers from a lack of income security, lack of understanding from institutions, lack of external support, emotional solitude and overwork, all of which prevent her from achieving personal fulfilment.

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That's because ensuring our collective security - whether protecting people from physical harm, providing economic stability, or giving children emotional stability - is not just an end in itself.

BBC: NEWS | UK | UK Politics | In full: Cameron speech