If you have never seen the fantastic debate between Keyes and Dershowitz, try to get a tape (might still be available through C-Span)
It tells you pretty much where Dersh stands on religion. Keyes, who consistently maintains, that there is an absolute moral authority that comes from God, while Dersh insists that he himself KNOWS what's right (meaning what he considers right might sometimes be in line with spiritual teachings, but not always, and thus he is the authority unto himself.) It's relativism. It's picking and choosing what spiritual teachings you are going to observe and which ones you are going to ignore.
A world without Absolutes. . .and yes, this is really one relativist doing battle with another. . .and relatively speaking. . .Dershowitz claims the higher ground here. . .and the 'Rabbi' has staked what he imagines, is his.