Neil Sinclair's poems are an example of the creative process unleashed by the awakening of the kundalini. After undergoing this profound spiritual experience in 1973, the author's poetry came to him automatically, channeled from a mystical place. These poems carry many profound spiritual and philosophical meanings. Though Sinclair wrote these poems, he does not claim ultimate authorship. He says that the poems come to him complete and intact, inclusive of meter and rhyme. This volume of his poetry is a collection of poems written between 1973 and 2008, the first such published edition. The poems use metaphors from nature and deliver truths about life, society, and the universe. However there are also poems about love and nature, from politics to personal psychology, and from environmentalism to religion.

Neil Bethell Sinclair's spiritual experience falls into the category of kundalini activation, an area of study now receiving more intense scientific scrutiny. The activation of his kundalini created an immense transformation of his nervous system.The Spirit Flies Free is a collection of poems that explores the depths of spiritual enlightenment and the breadth of human experience.