Each religion is alone true, that is to say, that at the moment we are thinking of it we must bring as much attention to bear on it as if there were nothing else...A 'synthesis' of religion implies a lower quality of attention.
C'J: In a long lifetime of studying, and learning from religions, it is necessary to suspend disbelief to this extent to get anything from them. When I am singing a Mass it it impossible to do it right or learn from the experience if there are any reservations about God or the belief set you are singing about.
One of the reasons I do not attempt to build a coherent whole from what I learn is that not only are they alone true, they are also alone false. I suspect that if any had been true in the sense of having a true connection to God, I would have by now found God. Unlike Simone, the fact that all religions are alone false led me not to God but to a cosmopolitan understanding of morality, meaning and purpose in life.