Druidism for some is a spiritual path, for others a religion and for still others a cultural activity.
As a spiritual path or philosophy, modern Druidry began to develop about three hundred years ago during the period known as the "Druid Revival". It was inspired by the tales of the ancient druids and derived from the works of historical researchers, local lore and early literature. In this way the legacy of Druidry goes far back into the past.
Here are some views from different authors on “What is Druidism?”
“What does it mean to be a druid today? Above all else, Druidism means following a spiritual path rooted in the green Earth. It means participating in a living Western spiritual tradition, deriving from many sources, including surviving ties from wise Celtic teachings, but embracing the contributions of many peoples and many ages. It means learning from archaic traditions, from three centuries of modern Druidic lore, and from the ever-changing lessons of the living planet itself. It means embracing an experiential approach to religious questions, one that abandons rigid belief systems in favor of inner development and individual contact with the realms of nature and spirit."(John Michael Greer, Druidry - A Green Way of Wisdom)
“It is an attitude, an understanding, an exquisitely simple and natural philosophy of life. For many it is a rich and ancient religion, a mystical spirituality. For others it is simply a guide for life. It is absolutely open and free to anyone who wants to discover it."(Emma Restall Orr – Druid Priestess)
“Rather than being an organized religion, Druidism offers a personal and individual way of life that can become part of a modern urban as well as rural life. It instinctively connects us to the vital energies of the earth under the floor and the sky above the highest apartment building”(Cassandra Eason, The Modern-Day Druidess)
“What is Druidism? A spiritual path, a way of life, a philosophy, Druidism is it all… Druidism is alive and well and has migrated around the world forming a wonderful network of people who honor and respect the Earth and the sacred right to life of everything that is part of the Earth. Like a great tree drawing nourishment from its roots, Druidry draws wisdom from its ancestral heritage. There is a saying in Druidism “the big tree grows on the leaves it drops on the ground”. Druidism today does not pretend to replicate the past, rather it is producing a new season of growth".(Caristiona Worthington, The Beginner's Guide to Druidry)