Unity in diversity is used as an expression of harmony and unity between dissimilar individuals or groups. It is a concept of "unity without uniformity and diversity without fragmentation" that shifts focus from unity based on a mere tolerance of physical, cultural, linguistic, social, religious, political, ideological and/or psychological differences towards a more complex unity based on an understanding that difference enriches human interactions. The idea and related phrase is very old and dates back to ancient times in both Western and Eastern Old World cultures. It has applications in many fields, including ecology, cosmology, philosophy, religion and politics.
Origins
The concept of unity in diversity can be traced back to Sufi philosopher Ibn al-'Arabi (1165–1240), who advanced the metaphysical concept of the "oneness of being" (wahdat al-wujud), namely, that reality is one, and that God's is the only true existence; all other beings are merely shadows, or reflections of God's qualities. Abd al-Karīm al-Jīlī (1366–1424) expanded on Al-'Arabi's work, using it to describe a holistic view of the universe which reflects "unity in diversity and diversity in unity" (al-wahdah fi'l-kathrah wa'l-kathrah fi'l-wahdah).
Leibniz used the phrase as a definition of "harmony" (Harmonia est unitas in varietate) in his Elementa verae pietatis, sive de amore dei 948 I.12/A VI.4.1358. Leibniz glosses the definition Harmonia est cum multa ad quandam unitatem revocantur which means the 'Harmony' is when many [things] are restored to some kind of unity.
Besides, in India, the guiding principle of the Sahitya Akademi, as articulated by Dr. S Radhakrishnan, resonates profoundly: “All Indian literature is one, written in different languages.” This perspective extends seamlessly to encompass the mosaic of Indian culture. Regionally distinct cultures, adorned in a spectrum of dialects and expressions imbued with local hues, encapsulate the very essence of India's spirit. .
Swami Vivekananda once emphasized that India's spiritual heritage taught the world two invaluable virtues: tolerance and universal acceptance. Throughout history, India has welcomed and nurtured a multitude of philosophical and ideological streams. It has provided a fertile ground for these diverse schools of thought to flourish, drawing inspiration from their rich reservoirs of ideas. India's openness to assimilating wisdom, not just from within but also from distant lands, echoes the ancient wisdom of the Upanishads: 'Accept all noble thoughts coming from all sides.'
Religious beliefs
The Old Javanese poem Kakawin Sutasoma, written by Mpu Tantular during the reign of the Majapahit empire sometime in the 14th century, contains the phrase Bhinneka Tunggal Ika, translated as "unity in diversity". The poem is notable as it promotes tolerance between Hindus (especially Shaivites) and Buddhists, stating that although Buddha and Shiva are different in substance, their truths are one:
Unity in diversity is a prominent principle of the Baháʼí Faith. In 1938, in his book The World Order of Baháʼu'lláh, Shoghi Effendi, the Guardian of the Baháʼí Faith, said that "unity in diversity" was the "watchword" for the religion.
ʻAbdu'l-Bahá, the head of the Baháʼí Faith from 1892 to 1921, explained this principle in terms of the oneness of humanity:
In Indian spiritual teacher Meher Baba's Final Declaration, he stated that "Unity in the midst of diversity can be made to be felt only by touching the very core of the heart. This is the work for which I have come. I have come to sow the seed of love in your hearts so that, in spite of all superficial diversity which your life in illusion must experience and endure, the feeling of oneness through love is brought about amongst all the nations, creeds, sects and castes of the world."
Unity in diversity is also a slogan utilized by the disciples of Swami Sivananda. They came to America to spread the true meaning of Unity in Diversity; that we are All in One & One in All in an all loving ahimsa God.
Dutch Christian theologian Herman Bavinck wrote that principles of "unity in diversity" and "diversity in unity" both flow out of the Christian doctrines of the Imago Dei and the Trinity:Every human being, while a member of the body of humanity as a whole, is at the same time a unique idea of God, with a significance and destiny that is eternal! Every human being is himself or herself an image of God, yet that image is only fully unfolded in humanity as a whole!