“The truth is that God has endowed man with virtues, powers and ideal faculties of which nature is entirely bereft and by which man is elevated, distinguished and superior. We must thank God for these bestowals, for these powers He has given us, for this crown He has placed upon our heads.

How shall we utilize these gifts and expend these bounties? By directing our efforts toward the unification of the human race. We must use these powers in establishing the oneness of the world of humanity, appreciate these virtues by accomplishing the unity of whites and blacks, devote this divine intelligence to the perfecting of amity and accord among all branches of the human family so that under the protection and providence of God the East and West may hold each other’s hands and become as lovers. Then will mankind be as one nation, one race and kind—as waves of one ocean. Although these waves may differ in form and shape, they are waves of the same sea.”

‘Abdu’l-Bahá
The Promulgation of Universal Peace page 50

“… Behold a beautiful garden full of flowers, shrubs, and trees. Each flower has a different charm, a peculiar beauty, its own delicious perfume and beautiful colour. The trees too, how varied are they in size, in growth, in foliage—and what different fruits they bear! Yet all these flowers, shrubs and trees spring from the self-same earth, the same sun shines upon them and the same clouds give them rain.

So it is with humanity. It is made up of many races, and its peoples are of different colour, white, black, yellow, brown and red—but they all come from the same God, and all are servants to Him. This diversity among the children of men has unhappily not the same effect as it has among the vegetable creation, where the spirit shown is more harmonious. Among men exists the diversity of animosity, and it is this that causes war and hatred among the different nations of the world.

Differences which are only those of blood also cause them to destroy and kill one another. Alas! that this should still be so. Let us look rather at the beauty in diversity, the beauty of harmony, and learn a lesson from the vegetable creation. If you beheld a garden in which all the plants were the same as to form, colour and perfume, it would not seem beautiful to you at all, but, rather, monotonous and dull. The garden which is pleasing to the eye and which makes the heart glad, is the garden in which are growing side by side flowers of every hue, form and perfume, and the joyous contrast of colour is what makes for charm and beauty. So is it with trees. An orchard full of fruit trees is a delight; so is a plantation planted with many species of shrubs. It is just the diversity and variety that constitutes its charm; each flower, each tree, each fruit, beside being beautiful in itself, brings out by contrast the qualities of the others, and shows to advantage the special loveliness of each and all.

Thus should it be among the children of men! The diversity in the human family should be the cause of love and harmony, as it is in music where many different notes blend together in the making of a perfect chord. If you meet those of different race and colour from yourself, do not mistrust them and withdraw yourself into your shell of conventionality, but rather be glad and show them kindness. Think of them as different coloured roses growing in the beautiful garden of humanity, and rejoice to be among them.

Likewise, when you meet those whose opinions differ from your own, do not turn away your face from them. All are seeking truth, and there are many roads leading thereto. Truth has many aspects, but it remains always and forever one.”

‘Abdu’l-Bahá

Paris Talks, pg 52