"If you think of thoughts of success and back them up with hard work, then you will be a winner. If you cherish doubts, negative thoughts, then you won't be a winner at all."

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If you look at Earth from space you see a dot, that's here. That's home. That's us. It underscores the responsibility to deal more kindly and compassionately with one another and to preserve and cherish that pale blue dot, the only home we've ever known.

— Carl Sagan