"In some great moment, man can be perfect, it's possible. But for five minutes." - Psychologist Abraham Maslow

"In some great moment, man can be perfect, it's possible. But for five minutes." - Psychologist Abraham Maslow Bigstock hide caption

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"In some great moment, man can be perfect, it's possible. But for five minutes." - Psychologist Abraham Maslow

"In some great moment, man can be perfect, it's possible. But for five minutes." - Psychologist Abraham Maslow

Bigstock

Maslow's Human Needs

Humans need food, sleep, safety, love, purpose. Psychologist Abraham Maslow ordered our needs into a hierarchy. This week, TED speakers explore that spectrum of need, from primal to profound.

Psychologist Abraham Maslow was a pioneer in positive psychology, envisioning what was right with his clients, rather than what was wrong. Corbis hide caption

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Corbis

How Did Abraham Maslow Change Psychology?

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Circadian neuroscientist Russell Foster says it's time for us to take sleep seriously. James Duncan Davidson/TED hide caption

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James Duncan Davidson/TED

Why Do We Need Sleep?

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Let's Go To Bed Vitamin String Quartet

"Security is survival. And until that need is met, other things are less important." - Computer security expert Bruce Schneier Dave Cole/TED hide caption

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Dave Cole/TED

What Does It Take To Feel Secure?

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"The bonds of community, of tribe, are a very, very particular thing." - Sebastian Junger Courtesy Of TED hide caption

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Courtesy Of TED

How Does War Teach Soldiers About Love?

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"To have self esteem ... it just takes work." - Caroline Casey James Duncan Davidson/TED hide caption

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James Duncan Davidson/TED

What Defines A Person's Sense Of Self?

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Can't See Through It Disco Inferno

Psychologist Mihaly Csikszentmihalyi says we can achieve one of our most elusive needs, self-actualization, by seeking moments of "flow." Asa Mathat/TED hide caption

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Asa Mathat/TED

What Makes A Life Worth Living?

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Baby What Do You Need 67 Purple Fishes