Anyone with sincere religious beliefs cannot say that all religions are true. That is so illogical it is pathetic. All religion cannot be true because some of them are so diametrically opposed to each other.
I also like to look at the dynamic that takes place between religion and science because in a way both are asking the same questions: Who are we? Where do we come from? Why are we here? Where are we going? The methodologies are diametrically opposed but their motivation is the same the wellspring is the same in both cases.