Elon Musk doesn't have a natural feel for empathy or emotions, says his biographer who's followed him for three years.

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Elon Musk's biographer, Walter Isaacson (Right), said the Twitter owner would
Walter Isaacson (right), said his biography subject Elon Musk has engineering acumen, but suggested the Tesla CEO lacks "empathy."

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Elon Musk's famous family includes a model, several millionaire entrepreneurs, and secret twins. Here are the members of the Musk family tree.

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Elon Musk, wearing a black suit and tie, waves to photographers outside a courthouse
Elon Musk has nine known children, including two with Grimes.

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Inside the turbulent personal life of Elon Musk, who had secret twins with an exec, got divorced 3 times, and was seen at the Super Bowl with Rupert Murdoch

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Grimes, left, and Elon Musk attend the Costume Institute Gala at the Metropolitan Museum of Art in May 2018.

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Elon Musk regained the title of 'world's richest man.' Here's how the billionaire went from getting bullied as a child to becoming one of the most successful and controversial men in tech.

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Elon Musk stands next to a replica spaceship

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