⁷⁴Brennan, Martin. The Boyne Valley Vision. Portlaoise: The Dolmen Press, 1980. 1.
From the author's preface: "What was previously considered the dawn of civilization may in fact have been its high noon. In spite of refinements in the techniques and tools of modern archaeology, we will never be able to fathom the achievements of a people whose primary tools were stone unless we rid ourselves of preconceived ideas about the origins and development of science and art." More information on Martin Brennan is available here.
Mainstream archaeologists and other scientists are usually more skeptical about the claims of a precise Neolithic astronomy. Ronald Hutton writes, "The bold attempts of Martin Brennan to combine the orientations, the art and the settings of the County Meath tombs in order to explain the theology behind them have produced no more than conjectures. His confident tone and refusal to recognize the limitations of his evidence reduce the value of his declarations in the eyes of prehistorians as they may increase it in the estimation of a less wary public. Certainly, the wonderful phenomenaon of the solstice at Newgrange at present offers us puzzles, not answers." (Hutton, Ronald. The Pagan Religions of the Ancient British Isles: Their Nature and Legacy. Oxford, UK: B. Blackwell, 1991. 59-60.)