I just had to share this Creepypasta, I love it.
All credit goes to Jim S. on creepypasta.com

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The inventor was frustrated. He had spent years, decades, researching the nature of time, and his work had finally come to fruition: he had invented a — theoretically — functioning time machine. With this he knew he could silence all the naysayers who had repudiated the underlying goal of his research. They had told him, time without number, that time travel was impossible. Otherwise, one could create a paradox by, say, going back in time and killing one’s grandfather before he had any children....