"I have a dream" versus "I had a dream"

billzhao

I have a dream. Everybody has a dream. Unfortunately, dream is just a dream most of the time for most people.
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2 h! I7 H  R( u- tHowever, shoot for the moon. Even if you miss it, you'll land among the stars.
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  I* Q" Z% ?. q& I4 IIsn't it beautiful?
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billzhao

https://www.youtube.com/watch?v=qAoQx7Bdmxs