Charles Darwin Quotes about Age
I never gave up Christianity until I was forty years of age.
Charles Darwin (2008). “On the Origin of Species”, Sterling Publishing Company Incorporated
Charles Darwin (1866). “On the origin of species ... A facsimile of the first edition, with an introduction by Ernst Mayr. With a portrait and a bibliography”, p.370
Charles Darwin “Charles Darwin: An Anthology”, Transaction Publishers
Thomson's views on the recent age of the world have been for some time one of my sorest troubles.
Charles Darwin (2016). “Life and Letters of Charles Darwin: the Evolution”, p.629, VM eBooks