Attraction and harmony v repulsion and inharmony

In short, attraction and harmony of things are the cause of the production of fruits and useful results, while repulsion and inharmony of things are the cause of disturbance and annihilation. From harmony and attraction, all living contingent beings, such as plant, animal and man, are realized, and from inharmony and repulsion decay sets in and annihilation becomes manifest. Therefore whatever is the cause of harmony, attraction and union among men is the life of the world of humanity, and whatever is the cause of difference, of repulsion and of separation is the cause of the death of mankind.....
 It has therefore been made evident that fellowship and harmony are indicative of the training by the real Educator, while separation and dispersion prove wildness and deprivation of Divine training.

Selected Writings of ‘Abdu’l-Bahá P. 296

Fellowship and love V enmity and hatred.

In fine, when traveling and journeying throughout the world, wherever one finds construction, it is the result of fellowship and love, while everything that is in ruin shows the effect of enmity and hatred. Notwithstanding this, the world of humanity has not become aware and has not awakened from the sleep of heedlessness.
Again it engages in differences, in disputes and wrangling, that it may set up ranks of war and may run to and fro in the arena of battle and strife.

Selected Writings of ‘Abdu’l-Bahá P. 295

Universal Religion

The people of religions find, in the teaching of His Holiness Bahá’u’lláh, the establishment of Universal Religion—a religion that perfectly conforms with present conditions, which in reality effects the immediate cure of the incurable disease, which relieves every pain, and bestows the infallible antidote for every deadly poison.
For if we wish to arrange and organize the world of mankind in accordance with the present religious imitations and thereby to establish the felicity of the world of mankind, it is impossible and impracticable—for example, the enforcement of the laws of the Old Testament (Torah) and also of the other religions in accordance with present imitations.
But the essential basis of all the Divine Religions which pertains to the virtues of the world of mankind and is the foundation of the welfare of the world of man, is found in the teachings of His Holiness Bahá’u’lláh in the most perfect presentation.
Similarly, with regard to the peoples who clamor for freedom: the moderate freedom which guarantees the welfare of the world of mankind and maintains and preserves the universal relationships, is found in its fullest power and extension in the teachings of His Holiness Bahá’u’lláh.

Selected Writings of ‘Abdu’l-Bahá P. 291