Compared to any religion in the world, hinduism is the most liberal. I am not saying this just because I am a hindu. We do not have to listen to any high priest nor can they harm us in any way where as the Christians are dependent on their Chruches right from the time of Baptism till burial in the cemetry and the muslims are in constant fear of one fatwa or another from some obscure mullahs!
And so far as the principles of any religion is concerned, it seems that Buddhism is much better than any other as they beleive in the well being of all livng things (not just humanbeings).