All religions, arts and sciences are branches of the same tree.
It is ironic that the one thing that all religions recognize as separating us from our creator, our very self consciousness, is also the one thing that divides us from our fellow creatures. It was a bitter birthday present from evolution.
All religions develop, become exclusive, become divisive and quarrelsome.
The essence of all religions is one. Only their approaches are different.
All religions have been made by men.