Finding chapter and verse for that particular meme might be difficult, but similar memes aren’t hard to document. For example, the late Will Provine famously liked to say that scientists who were religious (by implication, who were Christians, since he referenced churches in his phrasing) had to “check their brain[s] at the church-house door.” His former student Betty Smocovitis writes about this here: William B. Provine: The Evolutionary Theorist Even Creationists Loved | | Observer
In other words, you can’t consistently be a good scientist and a sincere Christian. That’s close enough for me. Or, consider how Jerry Coyne sought to undermine the legitimacy of having some who believes in the Resurrection (Francis Collins) as head of the NIH.