His grandfather Erasmus argued in favor of evolution 60 years before he took up the cause himself
Although Erasmus died seven years before Charles was born, 
Charles grew up in a... [DOC] [TLE] The Descent of Man  American Scientist [PAR] DARWIN'S SACRED CAUSE: How a Hatred of Slavery Shaped Darwin's Views ... 
since he was quite aware of the transmutational views of his grandfather, 
Erasmus ... had his eyes opened to the variability of species on his five-year 
Beagle voyage.