Wisdom (n.) is being able to acquire knowledge even from those who have none themselves.
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Wisdom (n.) is distinguished from intelligence in that an intelligent man believes only half of what he hears, a wise man knows which half.
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Wisdom (n.) is impartiality, not neutrality, just as a fool is neutral, not impartial.
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Wisdom (n.) is suffering plus meaning.
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Wisdom (n.) is the notion that man doesn't know what he knows until he knows what he doesn't know.
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Wisdom (n.) is what comes to one by noticing what happens to one when one isn't.