(At the request of JustUWait221 and Lizajustme)
Yes, we all know THAT guy. But can you name all his sonnets? ;-)

"Lord, what fools these mortals be!"

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"Love all, trust a few, do wrong to none." 

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"The fool doth think he is wise, but the wise man knows himself to be a fool." 

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"Be not afraid of greatness. Some are born great, some achieve greatness, and others have greatness thrust upon them."

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"The fault, dear Brutus, is not in our stars, but in ourselves." 

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"There is nothing either good or bad, but thinking makes it so." 

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"Hell is empty and all the devils are here." 

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"I like this place and could willingly waste my time in it."

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"Stars, hide your fires; Let not light see my black and deep desires." 

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"Words are easy, like the wind; Faithful friends are hard to find." 

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"You speak an infinite deal of nothing." 

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"Love looks not with the eyes, but with the mind,
And therefore is winged Cupid painted blind."