A Vipassana is a silent prison that you enter of your own free will. You can't talk, read, use your phone, or masturbate, until you've finished ten days of meditating for ten hours each day.
"I remember a guy who said, 'My brother works in the Iranian embassy in London. Before I loved him as my brother, now I hate him as my enemy. I am ready to kill him tomorrow, if necessary.' And everyone applauded."