Doubt--because doubt is not a sin, it is a sign of your intelligence. You are not responsible to any nation, to any church, to any God. You are responsible only for one thing, and that is self knowledge. And the miracle is, if you can fulfill this responsibility, you will be able to fulfill many other responsibilities without any effort. The moment you come to your own being, a revolution happens in your vision. Your whole outlook about life goes through a radical change. You start feeling new responsibilities--not as some thing to be done, not as a duty to be fulfilled, but as a joy to do.