[by courtesy of Grupo de investigacion Ciencia, Razon y Fe, University of Navarre, Spain]
[from The Letters and Diaries of John Henry Newman, edited by C.S. Dessain and T. Gornall, Clarendon Press, Oxford 1973]
[from The Autobiography of Charles Darwin 1809-1882, edited by his grand-daughter Nora Barlow]]
[a selection from Darwin’s Correspondence]
[from Nature, Vol. XIX, in J.C. Maxwell’s Scientific Papers, New York 1965]