Readjusting to Harvard after experiencing life in Sudan has been a challenge, Williams says.
"It was like being in the 16th or 17th century," he says. "There was no electricity, no running water, and these people were slaves."
"Back at Harvard, the contrast is just ridiculous," he adds. "It's been hard to go to class and just concentrate again. I'm still trying to come to grips with what happened."
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