The teaching that we should treat others as we ourselves would wish to be treated, an ethic variously repeated in all the great religions, lends force to this latter observation in two particular respects: it sums up the moral attitude, the peace-inducing aspect, extending through these religions irrespective of their place or time of origin; it also signifies an aspect of unity which is their essential virtue, a virtue mankind in its disjointed view of history has failed to appreciate.