The exquisite craft that is distinctively Celtic art calls the ancient spirits to all of our hearts.
It somehow instinctively reminds all of us that we are eternally connected with the Cosmos and with every living thing on the Earth.
The form gained new popularity during the Celtic Revival of the 19th century; the name "Celtic cross" is a convention dating from that time.
The shape, usually decorated with interlace and other motifs from Insular art, became popular for funerary monuments and other uses, and has remained so, spreading well beyond Ireland.
The Book of Kells is one of the finest examples of illuminated manuscripts from the era of great manuscripts, 650-800 A. As to be expected, the story of the Kells manuscript is shrouded in the mist of history.
Students in the field speculate that the Kells book was probably started in the monastery on the island of Iona in the late 8th century and moved to the monastery at Kells in County Meath in the 11th century. The visitor to Dublin can see the original manuscript under conditions which are designed to protect the book rather than to display it to its best advantage.
However, the shape achieved its greatest popularity by its use in the monumental stone high crosses, a distinctive and widespread form of Insular art.
After all, we have the Gospels, the Talmud, and the Koran.
We have the writings of Plato and Socrates and Aristotle.
Celtic symbols honor the spirit of the Irish, the Scottish, the Welsh, the British, and anyone with Celtic heritage.
And even if you have no Celtic blood in your veins, if you honor Mother Earth and believe in the spiritual connection between all living things, then you definitely have a Celtic soul and should follow your heart. There are generally two types of writing about Celtic symbolism.