To see every woman and every man as sister and brother is to participate in the faith vision of the mystic, whose central intuition is a graced effect of contemplation, which gradually transforms our way of seeing reality. This mystical vision is far from an esoteric or "misty" dream, for surely the survival of our planet depends on a universal realization of this unity and the interconnectedness of all peoples and of all the cosmos, in the one Love which is God.
It really boils down to this: that all life is interrelated. We are all caught in an inescapable network of mutuality, tied to a single garment of destiny. Whatever affects one directly, affects all indirectly.