In my Grandfather's case this was clearly the adaptive nature of the taught teaching of evolution and the existence from his carrer as a genetics PhD. His first wife died in child birth and he insisted (in surviving correspondence) that he would to mourne this death wisht to "return" to the 'simple faith' of his parents but their mid-West Christianity was not enough in some sense for him so he moved on with the increasing Huxleyish "agnositicism". It got him a job and a new wife and pension as he adapted to his new situation but he died with an episcopal preist and him agreeing about prayer in some same sense.
This was all in the mind. He knew the body of orinithology differently. His name is Willard F. Stanley and he established a Natural History Museum at SUNY Fredonia, Fredonia NY.
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