FeliciaM7 wrote:
You mean the eppy where Locke asks "what makes it so hard for you to believe?" and Jack says "what makes it so EASY for you?" or something like that. They've had a few destiny/fate/oh I don't believe that shit conversations.

I think it was towards the end of season one, but you're right, they've had of few of those. But Locke specifically referred to himself as a Man of Faith, and Jack as a Man of Science. That conflict, seems to me, defines much of the series.