"Twelve Sonnets: A Defense of Spirit" is a prosimetrum, a collection of poems alternating with counterpoint prose that connects the poems and amplifies their content. The subject matter is Nature, Physics, Spirit, Consciousness, and romantic love. The book argues that the idea that spirit does not exist is a self-contradiction, argues that modern Physics proves that the Universe is not a machine, and illustrates spirit in action both in Nature and within our own being.