Opening paragraphs...............

"All his life, Charles Darwin believed that inheritance was much more important in shaping a man or woman than education or environment.  Nature rather than nurture was formative, in his view.  Though he knew nothing of the science of genetics, and never used the word gene, which was first recorded in English in 1911, more than a quarter century after his death, he is a classic case of genetic inheritance.  Indeed, two of his grandparents and his father can reasonably be classified as geniuses."
-Paul Johnson, Darwin: Portrait of a Genius