Penn Jillette of Penn and Teller is a self-avowed and vocal athiest. He tells of a time when he was given a Bible by someone after one of his shows and Penn says:
I’ve always said, you know, that I don’t respect people who don’t proselytize. I don’t respect that at all. If you believe that there’s a heaven and hell, and people could be going to hell, or not getting eternal life or whatever, and you think that, well, it’s not really worth telling them this because it would make it socially awkward…How much do you have to hate somebody to not proselytize? How much do you have to hate somebody to believe that everlasting life is possible and not tell them that? I mean, if I believed beyond a shadow of doubt that a truck was coming at you, and you didn’t believe it, and that truck was bearing down on you, there is certain point where I tackle you. And is this more important than that…”
Praxis: Faith in Action 